diff --git a/Sources/bowlin_project/lib/database/fields/FriendFields.dart b/Sources/bowlin_project/lib/database/fields/FriendFields.dart
new file mode 100644
index 0000000..327d16a
--- /dev/null
+++ b/Sources/bowlin_project/lib/database/fields/FriendFields.dart
@@ -0,0 +1,10 @@
+class GameFields {
+  static final List<String> values = [
+    id, date, pointsCurrentUser, userId
+  ];
+
+  static final String id = '_id';
+  static final String date = '_date';
+  static final String pointsCurrentUser = '_points_current_user';
+  static final String userId = '_user_id';
+}
\ No newline at end of file
diff --git a/Sources/bowlin_project/lib/database/fields/StatFields.dart b/Sources/bowlin_project/lib/database/fields/StatFields.dart
index 554ba52..e6bed82 100644
--- a/Sources/bowlin_project/lib/database/fields/StatFields.dart
+++ b/Sources/bowlin_project/lib/database/fields/StatFields.dart
@@ -1,4 +1,16 @@
 class StatFields {
+  static final List<String> values = [
+    idUser, nbVictory, nbGames, highscore, nbStrikes, nbSpares, nbScore, avgScore, avgPinsPerRound
+  ];
 
+  static final String nbVictory = '_nbVictory';
+  static final String nbGames = '_nbGames';
+  static final String highscore = '_highscore';
+  static final String nbStrikes = '_nbStrikes';
+  static final String nbSpares = '_nbSpares';
+  static final String nbScore = '_nbScore';
+  static final String avgScore = '_avgScore';
+  static final String avgPinsPerRound = '_avgPinsPerRound';
+  static final String idUser = '_idUser';
 
 }
\ No newline at end of file
diff --git a/Sources/bowlin_project/lib/database/mappers/StatMapper.dart b/Sources/bowlin_project/lib/database/mappers/StatMapper.dart
new file mode 100644
index 0000000..d668541
--- /dev/null
+++ b/Sources/bowlin_project/lib/database/mappers/StatMapper.dart
@@ -0,0 +1,32 @@
+import 'package:bowl_in/database/fields/StatFields.dart';
+import '../../model/Stat.dart';
+import '../../model/User.dart';
+
+class StatMapper {
+  static Map<String, dynamic> toJson(Stat stat, User user) {
+    return {
+      StatFields.idUser: user.id,
+      StatFields.nbVictory: stat.nbVictory,
+      StatFields.nbGames: stat.nbGames,
+      StatFields.highscore: stat.highscore,
+      StatFields.nbStrikes: stat.nbStrikes,
+      StatFields.nbSpares: stat.nbSpares,
+      StatFields.nbScore: stat.nbScore,
+      StatFields.avgScore: stat.avgScore,
+      StatFields.avgPinsPerRound: stat.avgPinsPerRound
+    };
+  }
+
+  static Stat toModel(Map<String, dynamic> json) {
+    return Stat(
+        json[StatFields.nbVictory],
+        json[StatFields.nbGames],
+        json[StatFields.highscore],
+        json[StatFields.nbStrikes],
+        json[StatFields.nbSpares],
+        json[StatFields.nbScore],
+        json[StatFields.avgScore],
+        json[StatFields.avgPinsPerRound]
+    );
+  }
+}
diff --git a/Sources/bowlin_project/lib/database/mappers/UserMapper.dart b/Sources/bowlin_project/lib/database/mappers/UserMapper.dart
index 225753e..7aa14a8 100644
--- a/Sources/bowlin_project/lib/database/mappers/UserMapper.dart
+++ b/Sources/bowlin_project/lib/database/mappers/UserMapper.dart
@@ -1,3 +1,4 @@
+import '../../model/Stat.dart';
 import '../../model/User.dart';
 import '../fields/UserFields.dart';
 
@@ -11,14 +12,15 @@ class UserMapper {
     };
   }
 
-  static User toModel(Map<String, dynamic> json) {
-    return User(
+  static User toModel(Map<String, dynamic> json, Stat stat) {
+    return User.withStat(
       json[UserFields.id],
       json[UserFields.name],
       json[UserFields.image],
       json[UserFields.mail],
       [],
       [],
+      stat
     );
   }
-}
\ No newline at end of file
+}
diff --git a/Sources/bowlin_project/lib/database/sqlflite/BowlInDatabase.dart b/Sources/bowlin_project/lib/database/sqlflite/BowlInDatabase.dart
new file mode 100644
index 0000000..b79d556
--- /dev/null
+++ b/Sources/bowlin_project/lib/database/sqlflite/BowlInDatabase.dart
@@ -0,0 +1,251 @@
+import 'package:bowl_in/database/mappers/GameMapper.dart';
+import 'package:bowl_in/database/mappers/StatMapper.dart';
+import 'package:bowl_in/model/Game.dart';
+import 'package:bowl_in/model/User.dart';
+import 'package:path/path.dart';
+import 'package:sqflite/sqflite.dart';
+
+import '../../model/Stat.dart';
+import '../fields/GameDetailFields.dart';
+import '../fields/GameFields.dart';
+import '../fields/StatFields.dart';
+import '../fields/UserFields.dart';
+import '../mappers/UserMapper.dart';
+
+class BowlInDatabase {
+  BowlInDatabase();
+
+  static final BowlInDatabase instance = BowlInDatabase._init();
+
+  static Database? _database;
+
+  BowlInDatabase._init();
+
+  static const String tableUser = 'users';
+  static const String tableGame = 'games';
+  static const String tableGameDetail = 'gameDetails';
+  static const String tableStat = 'stats';
+
+  Future<Database> get database async {
+    if (_database != null) return _database!;
+
+    _database = await _initDB('user.db');
+    return _database!;
+  }
+
+  Future<Database> _initDB(String filePath) async {
+    final dbPath = await getDatabasesPath();
+    final path = join(dbPath, filePath);
+
+    return await openDatabase(path,
+        version: 1, onCreate: _createDB, onUpgrade: _upgradeDB);
+  }
+
+  Future _createDB(Database db, int version) async {
+    const idType = 'INTEGER PRIMARY KEY AUTOINCREMENT';
+    const textType = 'TEXT NOT NULL';
+    const boolType = 'BOOLEAN NOT NULL';
+    const integerType = 'INTEGER NOT NULL';
+    const realType = 'REAL NOT NULL';
+
+    await db.execute('''
+CREATE TABLE $tableUser ( 
+  ${UserFields.id} $idType, 
+  ${UserFields.name} $boolType,
+  ${UserFields.image} $textType,
+  ${UserFields.mail} $textType
+      )
+''');
+
+    await db.execute('''
+CREATE TABLE $tableGame (
+  ${GameFields.id} $idType,
+  ${GameFields.date} $textType,
+  ${GameFields.pointsCurrentUser} $integerType,
+  ${GameFields.userId} $integerType,
+  FOREIGN KEY(${GameFields.userId}) REFERENCES $tableUser(${UserFields.id})
+)
+''');
+
+    await db.execute('''
+CREATE TABLE $tableGameDetail (
+  ${GameDetailFields.id} $idType,
+  ${GameDetailFields.date} $textType,
+  ${GameDetailFields.nameWinner} $textType,
+  ${GameDetailFields.host} $textType
+)
+''');
+
+    await db.execute('''
+CREATE TABLE $tableStat (
+  ${StatFields.idUser} $integerType,
+  ${StatFields.nbVictory} $integerType,
+  ${StatFields.nbGames} $integerType,
+  ${StatFields.highscore} $integerType,
+  ${StatFields.nbStrikes} $integerType,
+  ${StatFields.nbSpares} $integerType,
+  ${StatFields.nbScore} $integerType,
+  ${StatFields.avgScore} $realType,
+  ${StatFields.avgPinsPerRound} $realType,
+  FOREIGN KEY(${StatFields.idUser}) REFERENCES $tableUser(${UserFields.id})
+)
+''');
+  }
+
+  Future<void> _upgradeDB(Database db, int oldVersion, int newVersion) async {
+    if (oldVersion == 5) {
+      await db.execute('DROP TABLE IF EXISTS $tableUser');
+      await db.execute('DROP TABLE IF EXISTS $tableGame');
+      await db.execute('DROP TABLE IF EXISTS $tableGameDetail');
+      await db.execute('DROP TABLE IF EXISTS $tableStat');
+      await _createDB(db, newVersion);
+    }
+  }
+
+  // User
+
+  Future<void> createUser(User user) async {
+    final db = await instance.database;
+    await db.insert(tableUser, UserMapper.toJson(user));
+    await createStat(user);
+  }
+
+  Future<User?> readUser(int id) async {
+    final db = await instance.database;
+    final result = await db
+        .query(tableUser, where: '${UserFields.id} = ?', whereArgs: [id]);
+
+    if (result.isNotEmpty) {
+      final stat = await readStat(id);
+
+      User user;
+      if (stat != null) {
+        user = UserMapper.toModel(result.first, stat);
+      }
+      else {
+        user = UserMapper.toModel(result.first, Stat.empty());
+      }
+      //final games = await readGame(id);
+      //for (var game in games!) {
+        //user.games.add(game);
+      //}
+      return user;
+    } else {
+      return null;
+    }
+  }
+
+  Future<void> updateUser(User user) async {
+    final db = await instance.database;
+
+    await db.transaction((txn) async {
+      await txn.update(tableUser, UserMapper.toJson(user),
+          where: '${UserFields.id} = ?', whereArgs: [user.id]);
+
+      await txn.update(tableStat, StatMapper.toJson(user.stat, user),
+          where: '${StatFields.idUser} = ?', whereArgs: [user.id]);
+
+      // Insert new games for the user
+      //await createGame(user);
+    });
+  }
+
+  Future<int> deleteUser(int id) async {
+    final db = await instance.database;
+
+    await deleteGame(id);
+
+    await deleteStat(id);
+
+    return await db.delete(
+      tableUser,
+      where: '${UserFields.id} = ?',
+      whereArgs: [id],
+    );
+  }
+
+  // GameDetail
+
+  // Game
+
+  Future<void> createGame(User user) async {
+    final db = await instance.database;
+
+    await db.transaction((txn) async {
+      for (var game in user.games) {
+        await txn.insert(tableGame, GameMapper.toJson(game, user));
+      }
+    });
+  }
+
+  Future<List<Game>?> readGame(int id) async {
+    final db = await instance.database;
+    final result = await db.query(tableGame,
+        where: '${GameFields.userId} = ?', whereArgs: [id]);
+
+    if (result.isNotEmpty) {
+      List<Game> games = [];
+      for (var game in result) {
+        games.add(GameMapper.toModel(game));
+      }
+      return games;
+    } else {
+      return null;
+    }
+  }
+
+  Future<int> deleteGame(int id) async {
+    final db = await instance.database;
+
+    return await db.delete(
+      tableGame,
+      where: '${GameFields.userId} = ?',
+      whereArgs: [id],
+    );
+  }
+
+  // Stat
+
+  Future<void> createStat(User user) async {
+    final db = await instance.database;
+    await db.insert(tableStat, StatMapper.toJson(Stat.empty(), user));
+  }
+
+  Future<Stat?> readStat(int id) async {
+    final db = await instance.database;
+    final result = await db.query(tableStat,
+        where: '${StatFields.idUser} = ?', whereArgs: [id]);
+
+    if (result.isNotEmpty) {
+      Stat stat = StatMapper.toModel(result.first);
+      return stat;
+    } else {
+      return null;
+    }
+  }
+
+  Future<void> updateStat(User user) async {
+    final db = await instance.database;
+    await db.transaction((txn) async {
+      await txn.update(tableStat, StatMapper.toJson(user.stat, user),
+          where: '${StatFields.idUser} = ?', whereArgs: [user.id]);
+    });
+  }
+
+  Future<int> deleteStat(int id) async {
+    final db = await instance.database;
+
+    return await db.delete(
+      tableStat,
+      where: '${StatFields.idUser} = ?',
+      whereArgs: [id],
+    );
+
+  }
+
+  Future close() async {
+    final db = await instance.database;
+
+    db.close();
+  }
+}
diff --git a/Sources/bowlin_project/lib/database/sqlflite/UserDataBase.dart b/Sources/bowlin_project/lib/database/sqlflite/UserDataBase.dart
deleted file mode 100644
index 5104443..0000000
--- a/Sources/bowlin_project/lib/database/sqlflite/UserDataBase.dart
+++ /dev/null
@@ -1,135 +0,0 @@
-import 'package:bowl_in/database/mappers/GameMapper.dart';
-import 'package:bowl_in/model/User.dart';
-import 'package:path/path.dart';
-import 'package:sqflite/sqflite.dart';
-
-import '../fields/GameDetailFields.dart';
-import '../fields/GameFields.dart';
-import '../fields/UserFields.dart';
-import '../mappers/UserMapper.dart';
-
-class BowlInDatabase {
-  BowlInDatabase();
-
-  static final BowlInDatabase instance = BowlInDatabase._init();
-
-  static Database? _database;
-
-  BowlInDatabase._init();
-
-  static const String tableUser = 'users';
-  static const String tableGame = 'games';
-  static const String tableGameDetail = 'gameDetails';
-
-  Future<Database> get database async {
-    if (_database != null) return _database!;
-
-    _database = await _initDB('user.db');
-    return _database!;
-  }
-
-  Future<Database> _initDB(String filePath) async {
-    final dbPath = await getDatabasesPath();
-    final path = join(dbPath, filePath);
-
-    return await openDatabase(path, version: 4, onCreate: _createDB, onUpgrade: _upgradeDB);
-  }
-
-  Future _createDB(Database db, int version) async {
-    const idType = 'INTEGER PRIMARY KEY AUTOINCREMENT';
-    const textType = 'TEXT NOT NULL';
-    const boolType = 'BOOLEAN NOT NULL';
-    final integerType = 'INTEGER NOT NULL';
-
-    await db.execute('''
-CREATE TABLE $tableUser ( 
-  ${UserFields.id} $idType, 
-  ${UserFields.name} $boolType,
-  ${UserFields.image} $textType,
-  ${UserFields.mail} $textType
-      )
-''');
-
-    await db.execute('''
-CREATE TABLE $tableGame (
-  ${GameFields.id} $idType,
-  ${GameFields.date} $textType,
-  ${GameFields.pointsCurrentUser} $integerType,
-  ${GameFields.userId} $integerType,
-  FOREIGN KEY(${GameFields.userId}) REFERENCES $tableUser(${UserFields.id})
-)
-''');
-
-    await db.execute('''
-CREATE TABLE $tableGameDetail (
-  ${GameDetailFields.id} $idType,
-  ${GameDetailFields.date} $textType,
-  ${GameDetailFields.nameWinner} $textType,
-  ${GameDetailFields.host} $textType,
-)
-''');
-  }
-
-  Future<void> _upgradeDB(Database db, int oldVersion, int newVersion) async {
-    if (oldVersion < 4) {
-      await db.execute('DROP TABLE IF EXISTS $tableUser');
-      await db.execute('DROP TABLE IF EXISTS $tableGame');
-      await db.execute('DROP TABLE IF EXISTS $tableGameDetail');
-      await _createDB(db, newVersion);
-    }
-  }
-
-  Future<void> createUser(User user) async {
-    final db = await instance.database;
-    await db.insert(tableUser, UserMapper.toJson(user));
-  }
-
-  Future<User?> readUser(int id) async {
-    final db = await instance.database;
-    final result = await db
-        .query(tableUser, where: '${UserFields.id} = ?', whereArgs: [id]);
-
-    if (result.isNotEmpty) {
-      User user = UserMapper.toModel(result.first);
-      final games = await db
-          .query(tableGame, where: '${GameFields.userId} = ?', whereArgs: [user.id]);
-      for (var game in games) {
-        user.games.add(GameMapper.toModel(game));
-      }
-      return user;
-    }
-    else {
-      return null;
-    }
-  }
-
-  Future<void> updateUser(User user) async {
-    final db = await instance.database;
-
-    await db.transaction((txn) async {
-      await txn.update(tableUser, UserMapper.toJson(user),
-          where: '${UserFields.id} = ?', whereArgs: [user.id]);
-
-      // Insert new games for the user
-      for (var game in user.games) {
-        await txn.insert(tableGame, GameMapper.toJson(game, user));
-      }
-    });
-  }
-
-  Future<int> deleteUser(int id) async {
-    final db = await instance.database;
-
-    return await db.delete(
-      tableUser,
-      where: '${UserFields.id} = ?',
-      whereArgs: [id],
-    );
-  }
-
-  Future close() async {
-    final db = await instance.database;
-
-    db.close();
-  }
-}
diff --git a/Sources/bowlin_project/lib/main.dart b/Sources/bowlin_project/lib/main.dart
index 56cd39a..d6faae1 100644
--- a/Sources/bowlin_project/lib/main.dart
+++ b/Sources/bowlin_project/lib/main.dart
@@ -1,5 +1,4 @@
 import 'package:bowl_in/model/LocalManager/LocalData.dart';
-import 'package:bowl_in/model/StubManager/StubData.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:bowl_in/config/app_router.dart';
@@ -11,7 +10,7 @@ void main() {
 }
 
 class MyApp extends StatelessWidget {
-  static IManager controller = StubData();
+  static IManager controller = LocalData();
 
   const MyApp({super.key});
 
diff --git a/Sources/bowlin_project/lib/model/GamePlayer.dart b/Sources/bowlin_project/lib/model/GamePlayer.dart
index 61af1ad..7eb41df 100644
--- a/Sources/bowlin_project/lib/model/GamePlayer.dart
+++ b/Sources/bowlin_project/lib/model/GamePlayer.dart
@@ -40,6 +40,7 @@ class GamePlayer {
       _parent.gameMgr.addGame(game);
 
       game.computeScores();
+      _parent.userMgr.saveUser(_parent.userCurrent);
       context?.go("/scoreboard", extra: game);
     } else {
       print("IN GAME : " + currentRoundIndex.toString());
diff --git a/Sources/bowlin_project/lib/model/IUserManager.dart b/Sources/bowlin_project/lib/model/IUserManager.dart
index b9d5ed6..e5a7e89 100644
--- a/Sources/bowlin_project/lib/model/IUserManager.dart
+++ b/Sources/bowlin_project/lib/model/IUserManager.dart
@@ -12,5 +12,6 @@ abstract class IUserManager {
   IAuthManager get authMgr => _authMgr;
   List<Player> getUsersByName(String name);
   Player getUserById(int id);
+  saveUser(User user);
   List<User> getRankingWithFriends();
 }
diff --git a/Sources/bowlin_project/lib/model/LocalManager/GameManager.dart b/Sources/bowlin_project/lib/model/LocalManager/GameManager.dart
index b93f3a0..dc111f7 100644
--- a/Sources/bowlin_project/lib/model/LocalManager/GameManager.dart
+++ b/Sources/bowlin_project/lib/model/LocalManager/GameManager.dart
@@ -3,57 +3,89 @@ import 'package:bowl_in/model/IGameManager.dart';
 import 'package:bowl_in/model/LocalManager/LocalData.dart';
 import 'package:bowl_in/model/Player.dart';
 
+import '../User.dart';
+
 class GameManager extends IGameManager {
   final LocalData parent;
-  
+
   // Constructor
   GameManager(this.parent);
 
-  @override
-  addGame(GameDetail gd) {
-    // TODO: implement addGame
-    throw UnimplementedError();
+  // Methods
+  GameDetail getGameById(int id) {
+    for (var element in parent.gameDetails) {
+      if (element.id == id) {
+        return element;
+      }
+    }
+    throw Exception("Game not found.");
   }
 
-  @override
-  GameDetail getGameById(int id) {
-    // TODO: implement getGameById
-    throw UnimplementedError();
+  List<GameDetail> getGamesByPlayerId(int id) {
+    List<GameDetail> games = [];
+    for (var element in parent.gameDetails) {
+      for (Player player in element.players) {
+        if (player is User && player.id == id) {
+          games.add(element);
+          break;
+        }
+      }
+    }
+    return games;
   }
 
-  @override
   List<GameDetail> getGamesByPlayer(Player user) {
-    // TODO: implement getGamesByPlayer
-    throw UnimplementedError();
+    List<GameDetail> games = [];
+    for (var element in parent.gameDetails) {
+      for (Player player in element.players) {
+        if (player is User && user is User && player.id == user.id) {
+          games.add(element);
+          break;
+        }
+      }
+    }
+    return games;
   }
 
-  @override
-  List<GameDetail> getGamesByPlayerId(int id) {
-    // TODO: implement getGamesByPlayerId
-    throw UnimplementedError();
+  List<GameDetail> getGamesByPlayers(List<Player> users) {
+    List<GameDetail> games = [];
+    for (var element in parent.gameDetails) {
+      if (element.players.toSet().containsAll(users.toSet())) {
+        games.add(element);
+      }
+    }
+    return games;
   }
 
-  @override
-  List<GameDetail> getGamesByPlayers(List<Player> users) {
-    // TODO: implement getGamesByPlayers
-    throw UnimplementedError();
+  List<Player> getPlayersByIdGame(int id) {
+    List<Player> players = [];
+    for (var element in parent.gameDetails) {
+      if (element.id == id) {
+        for (var player in element.players) {
+          players.add(player);
+        }
+        return players;
+      }
+    }
+    throw Exception("Game not found.");
   }
 
-  @override
-  int getNextId() {
-    // TODO: implement getNextId
-    throw UnimplementedError();
+  Map<Player, int> getRankByIdGame(int id) {
+    for (var game in parent.gameDetails) {
+      if (game.id == id) {
+        return game.getRank();
+      }
+    }
+    throw Exception("Game not found.");
   }
 
   @override
-  List<Player> getPlayersByIdGame(int id) {
-    // TODO: implement getPlayersByIdGame
-    throw UnimplementedError();
+  addGame(GameDetail gd) {
+    parent.gameDetails.add(gd);
   }
 
   @override
-  Map<Player, int> getRankByIdGame(int id) {
-    // TODO: implement getRankByIdGame
-    throw UnimplementedError();
+  int getNextId() {
+    return parent.gameDetails.length;
   }
-}
\ No newline at end of file
+}
diff --git a/Sources/bowlin_project/lib/model/LocalManager/LocalData.dart b/Sources/bowlin_project/lib/model/LocalManager/LocalData.dart
index eb840b5..3dfb52d 100644
--- a/Sources/bowlin_project/lib/model/LocalManager/LocalData.dart
+++ b/Sources/bowlin_project/lib/model/LocalManager/LocalData.dart
@@ -1,13 +1,19 @@
-import 'package:bowl_in/database/sqlflite/UserDataBase.dart';
+import 'package:bowl_in/database/sqlflite/BowlInDatabase.dart';
 import 'package:bowl_in/model/IManager.dart';
+import '../GameDetail.dart';
 import 'GameManager.dart';
 import 'UserManager.dart';
 
 class LocalData extends IManager {
-  final BowlInDatabase userDatabase = BowlInDatabase();
+  final BowlInDatabase database = BowlInDatabase();
 
   LocalData() {
     userMgr = UserManager(this);
     gameMgr = GameManager(this);
   }
+
+  List<GameDetail> _gameDetails = [];
+
+  List<GameDetail> get gameDetails => _gameDetails;
+
 }
diff --git a/Sources/bowlin_project/lib/model/LocalManager/UserManager.dart b/Sources/bowlin_project/lib/model/LocalManager/UserManager.dart
index c88f5ec..250fc30 100644
--- a/Sources/bowlin_project/lib/model/LocalManager/UserManager.dart
+++ b/Sources/bowlin_project/lib/model/LocalManager/UserManager.dart
@@ -2,7 +2,6 @@ import 'package:bowl_in/model/IUserManager.dart';
 import 'package:bowl_in/model/LocalManager/LocalData.dart';
 import 'package:bowl_in/model/Player.dart';
 import 'package:bowl_in/model/User.dart';
-import '../Game.dart';
 import 'AuthManager.dart';
 
 class UserManager extends IUserManager {
@@ -10,14 +9,15 @@ class UserManager extends IUserManager {
 
   // Constructor
   UserManager(this.parent) : super(AuthManager(parent)) {
-    User user = User(0, "Dave", "./assets/images/image_user_red.png", "", [], []);
-    user.games.add(Game(0,DateTime.now(), 30, []));
-    saveUser(user);
+    //User user = User(0, "Victor", "./assets/images/image_user_red.png", "", [], []);
+    //saveUser(user);
+    //parent.database.deleteUser(0);
+    //test();
     _initUser();
   }
 
   _initUser() async {
-    var user = await parent.userDatabase.readUser(0);
+    var user = await parent.database.readUser(0);
     if (user == null) {
       User user2 =
           User(1, "Unknown", "./assets/images/image_user_cyan.png", "", [], []);
@@ -27,8 +27,13 @@ class UserManager extends IUserManager {
     }
   }
 
-  saveUser(User user) {
-    parent.userDatabase.updateUser(user);
+  saveUser(User user) async {
+    var result = await parent.database.readUser(0);
+    if (result == null) {
+      await parent.database.createUser(user);
+    } else {
+      await parent.database.updateUser(user);
+    }
   }
 
   Map<String, dynamic> userToMap(User user) {
@@ -42,8 +47,9 @@ class UserManager extends IUserManager {
 
   @override
   List<User> getRankingWithFriends() {
-    // TODO: implement getRankingWithFriends
-    throw UnimplementedError();
+    List<User> sortedPlayers = List.from(parent.userCurrent.friends);
+    sortedPlayers.sort((a, b) => b.stat.highscore.compareTo(a.stat.highscore));
+    return sortedPlayers;
   }
 
   @override
diff --git a/Sources/bowlin_project/lib/model/StubManager/StubData.dart b/Sources/bowlin_project/lib/model/StubManager/StubData.dart
index d5d36f8..8499b82 100644
--- a/Sources/bowlin_project/lib/model/StubManager/StubData.dart
+++ b/Sources/bowlin_project/lib/model/StubManager/StubData.dart
@@ -11,6 +11,7 @@ import 'UserManager.dart';
 import 'GameManager.dart';
 
 class StubData extends IManager {
+
   StubData() {
     userMgr = UserManager(this);
     gameMgr = GameManager(this);
diff --git a/Sources/bowlin_project/lib/model/StubManager/UserManager.dart b/Sources/bowlin_project/lib/model/StubManager/UserManager.dart
index fd8d9e9..e016c60 100644
--- a/Sources/bowlin_project/lib/model/StubManager/UserManager.dart
+++ b/Sources/bowlin_project/lib/model/StubManager/UserManager.dart
@@ -38,4 +38,9 @@ class UserManager extends IUserManager {
     sortedPlayers.sort((a, b) => b.stat.highscore.compareTo(a.stat.highscore));
     return sortedPlayers;
   }
+
+  @override
+  saveUser(User user) {
+    return ;
+  }
 }
diff --git a/Sources/bowlin_project/lib/model/User.dart b/Sources/bowlin_project/lib/model/User.dart
index 7bcd9f9..582785c 100644
--- a/Sources/bowlin_project/lib/model/User.dart
+++ b/Sources/bowlin_project/lib/model/User.dart
@@ -8,12 +8,18 @@ class User extends Player {
   String _mail;
   List<Achievement> _achievements = <Achievement>[];
   List<User> _friends = <User>[];
-  final Stat _stat = Stat.empty();
+  late final Stat _stat;
   List<Game> games = [];
 
   // Constructor
   User(this._id, String name, String image, this._mail, this._achievements,
       this._friends)
+      : super(name, image){
+    _stat = Stat.empty();
+  }
+
+  User.withStat(this._id, String name, String image, this._mail, this._achievements,
+      this._friends, this._stat)
       : super(name, image);
 
   int get id => _id;