I recall Borg against Vijay Amritraj in the 1974 US Open had a really long game in that match at 4-2 for Vijay in the fifth.
I think Borg and Laver had a really long game (from reading about it) in their match in the 1975 WCT Championship.
It's not something I keep track of but I'll try to think of some.
Edit-I tried to find some newspaper accounts of the Borg/Laver WCT match but the only thing I could find was that it was a 4 hour and 5 minute match. I would guess there were some long games. I thought I read something about them playing a twenty point game or so. Could be wrong.
Last edited by pc1; 05-06-2011 at 05:13 PM.