Hey Guys
I do not have such knowledge about tennis but I found ,,The longest professional tennis match, in terms of both time and total games, was the Wimbledon 2010 first-round match between Nicolas Mahut and John Isner on 22, 23, and 24 June 2010.
Longest match by time and games: It took 11 hours and 5 minutes of playing time, and required 183 games.[3]
Longest set by time and games: The 5th set took 8 hours and 11 minutes of playing time[4], and required 138 games[3].