The average 2/3 set tennis match lasts about an hour to an hour and a half.
An actual game within a set in a tennis match can last indefinitely if the players are playing with ad-scoring (where a player must win two points in a row after deuce).
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Professional players play best-of-five 11-point games, requiring a two-point margin for victory. Amateur players play two 15-point games, with an 11-point tie-breaking game if needed. If the game is tied 10 to 10 the game must continue until a player wins by 2 points...i think do not know about clock time
It depends on many factors.
However the expedite rule will come into effect after 10 minutes, unless 18 points have been scored.
A game to 11 usually takes about 5-10 minutes. If a game stays in deuce, it can last much longer.