There are 6 games per set, and two sets. For each game, the scoring is like this: 15-30-40-50. Don’t ask me why. So during a game, the score can be 15-0, 30-30, 40-15 etc. When it gets to 50, the game is won. Games must be won by two points, so when it’s 40-40, you have to win two balls in a row to win the game.

Then there’s the set, which has 6 games, but again must be won by two games or more. So valid results are 6-4, 6-3, 7-5, 8-6 etc. And you have to win two sets to win the match. So 6-0, 6-0 is a won match. Otherwise if it’s 6-0, 4-6, then there’s a third set which settles it.