What are the longest games you know of?
These are some to start off with, just some I've made a note of. I'm sure there are longer games.
I'm listing the server's name first and whether or not they held serve, followed by some details of what the server did, and the opponent's name.
15 deuces, 1987 RG, Lendl is broken at 5-3 in third set, loses 9 set points, saves 6 break points, opponent was Nystrom
13 deuces, 1995 Wimbledon final, Sanchez Vicario is broken at 5-all in third, saves 5 break points vs. Graf
11 deuces, 1980 Chicago final, Evert is broken at 4-5 in the first set, saves 6 set points vs. Navratilova
11 deuces, 1996 AO SF, Agassi holds in second set vs. Chang
10 deuces, 1980 Wimbledon SF, Connors holds at 4-2 in second set vs. McEnroe
10 deuces, 1981 Toyota Championships, round robin, Austin holds at 3-all in the first set vs. Evert
10 deuces, 1985 USO SF, Evert is broken at 2-3 in the third vs. Mandlikova
10 deuces, 1987 AO final, Cash holds in second set, saves 5 set points vs. Edberg
10 deuces, 2005 AO, R128, Santoro broken in first game of second set vs. Federer
10 deuces, 2007 WTA Championships final, Henin is broken at 5-6 in the first set, saves 7 set points vs. Sharapova