What is the maximum number of sets in a women’s singles match at Grand Slams? The maximum is 3 sets.
Women’s singles matches at all four Grand Slam tournaments use a best-of-three format. The first player to win two sets wins the match, so a contest can finish in two sets or reach the maximum of three. A deciding third set is therefore possible, but a fourth set is not.
This differs from men’s singles at the Grand Slams, where matches traditionally use best-of-five scoring. A men’s match can last up to five sets, and the winner must take three. That contrast is why the number of sets in women’s and men’s major matches is often confused.
The format applies at the Australian Open, French Open, Wimbledon and US Open. It should also be distinguished from a set’s games: a standard set is usually won by reaching six games with a two-game lead, subject to the tournament’s tiebreak rules.