These are the longest streaks I am aware of:
97: Sampras at '97 Wimbledon(from early in his first round match until late in his semi)
87: Sampras at '01 USO(streak ended in first game of the final)
81: Isner
81: Mahut
80: Nadal at '06 USO(streak ended in first game of the final)
On a related topic, Federer I believe is the only person in the open era to have won 2 tournaments without losing his serve.
atp doesn't track this record(they have absolutely no serving stats pre 1991)
what is your source?
I would bet Mac in '84 has some of these records, just look at the scores of most of his matches that year. If he doesn't have the hold% record, he has to have the break% record for the Open Era. And I imagine some streaks happened along the way.
pete had streaks of 101 holds at wimby 2000
The 101 holds were over a 2 year period at Wimbledon('00 & '01) so I don't think that should count.
I believe the record-holder is Wayne Arthurs with his streak of 111 service holds in a row, if I remember correctly.
Well, that includes qualifying. ATP doesn't include qualifying results in any ace records, head to heads for players, or win/loss so not sure if this should count.
These 'record' aspects of tennis are so young, like I said earlier its very possible someone like Mac(or better yet Martina N in the early to mid 80s) did something amazing serve-wise that no one was keeping track of at all. What a shame.
Was just watching the '85 W final, Bud Collins said that Kevin Curren held serve 64 straight times in that event. He's probably the best source for this sort of stuff, not the very young ATP.