Profession men's doubles tennis tournaments usually play best 2 out of 3 sets. However, the four grand slam tournaments still play best 3 out of 5 sets.
there are 4 players in lawn tennis doubles.
3 or 5. It depends on the tournament.
Rogers Cup is the best of 3 sets.
92 times a day
All of the Olympic tennis rules are in the related links section.
Its best of five sets, so whoever wins three sets wins.