instruction: How long does a tennis match take?
response: A tennis match is usually played as the best of three or five sets, where each set is played as the first to six games with at least a two game margin. A tiebreaker is played if both sides win 6 games. The relative skill of the players, the frequency of breaks, and other factors can all affect the length of a tennis match, but usually a best-of-three set will take around 90 minutes and a best-of-five set will take around 2 and a half hours to 3 hours.