fetchRequest.predicate=NSPredicate(format:"(player1_name == %@ AND result == 'win') OR (player2_name == %@ AND result == 'lose')",player,player)
fetchRequest.predicate=NSPredicate(format:"(player1_name == %@ AND result == player1_name) OR (player2_name == %@ AND result == player2_name)",player,player)
fetchRequest.predicate=NSPredicate(format:"(player1_name == %@ AND result == 'lose') OR (player2_name == %@ AND result == 'win')",player,player)
fetchRequest.predicate=NSPredicate(format:"(player1_name == %@ AND result != player1_name) OR (player2_name == %@ AND result != player2_name)",player,player)