At the US Open tennis tournament, the number of sets played depends on the event category:
- Men's singles matches are played in a best-of-five-sets format, meaning a player must win three sets to win the match.
- Women's singles, men's doubles, and women's doubles matches are played in a best-of-three-sets format, meaning a player or team must win two sets to win the match
In all sets, players need to win six games to win a set, with a tiebreak played if the score reaches 6-6 in games
