In tennis, the number of sets played depends on the type of match:

Number of Sets in Tennis Matches

1. Best of 3 Sets

• Most common format in regular ATP and WTA tour matches.
• The player who wins 2 sets first wins the match.
• Used in most women's matches and men's matches outside of Grand Slams.

2. Best of 5 Sets

• Used primarily in men's Grand Slam tournaments (Australian Open, French Open, Wimbledon, US Open).
• The player who wins 3 sets first wins the match.
• Also used in Davis Cup and some other major competitions.

Summary Table

Match Type| Sets Needed to Win| Total Possible Sets
---|---|---
Regular ATP/WTA matches| 2 sets| Up to 3 sets
Men's Grand Slam matches| 3 sets| Up to 5 sets

If you want to know about specific formats like doubles or junior matches, feel free to ask!