Thank you, I'll add a bit (for those who didn't read about this 5-day match and for future generations
Most of the information can be found in this thread
but again, I think great stuff like that just drown in the sea that is General Messages forum.
By all means correct me if there's anything wrong.
In a match that has started on Saturday and finished on Wednesday (due to 7 rain delays and the traditional [yet stupid] Sunday off) Melo/Sa def. Hanley/Ullyet 7-5, 6-7 (4), 6-4, 6-7 (7), 28-26. It was the longest 5th set ever in any match, singles or doubles (tied with one Wimbledon 89' Singles qualifier).
The game lasted 5h 58m (the last set alone 3h 5m) - they just missed the GS Doubles record (set in Wimbledon 2006) by 11 minutes. The victors saved 4 MPs in the decider.
The longest decisive
set is two games longer:
Ireland/Arthurs def. Brandi/Messori 6-3, 3-6, 29-27 (Australian Open '97). At 4h 36m, this is the longest 3-setter ever, at least since tie-breaks were introduced.
Going through the net, I've found 3 longer sets:
Dick Leach/Dick Dell def. Schloss/Mozur 3-6, 49-47(!!!), 22-20 (Newport '67)
Stan Smith/Van Dillen def. Cornejo/Fillol 7-9, 37-39, 8-6, 6-1, 6-3 (Davis Cup '73)
Segura/Olmedo def. Segal/Forbes 32-30, 5-7, 6-4, 6-4 (Wimbledon '68; GS record)
It’s worth mentioning Segura was 47 at that time.
Surely at least the first one must have lasted over 7h, but I haven't been able to find out more about it. Do you know more about these three?