A tennis game can last anywhere from a few minutes to several hours. The length of the game depends on the number of sets being played and the number of games in each set. A match is typically two out of three sets, but it can be three out of five sets. A set is won by the first player to win six games, with a margin of at least two games. If the score reaches 6-6, then a tiebreaker is played to determine the winner of the set. The tiebreaker is usually first to seven points with a margin of two points.
The length of a tennis game also depends on how long each individual game takes. If the players are evenly matched, then the games can take a while. However, if one player is much better than the other, then the games will be over quickly.
Finally, the length of a tennis game can also be affected by the number of breaks that are taken. There are typically two breaks in a game, one after the first set and one after the second set. However, if a player needs to take a bathroom break or gets injured, then the game can be paused for a longer period of time.