What is the record of saved match points in a ATP/WTA tennis match?
And what about limited at grand slam matches?
I mean that player who saved match points finally wins the game
NOTE: This cannot be considered as a complete answer, since I wasn't able to find the record for WTA matches and also some sources I found contradict each other. But I am posting at least the information I was able to find, hoping that someone might be able to find the missing info.
Open Era records
Adriano Panatta saved 11 match points in his match against Kim Warwick in the first round of 1976 Italian Open. He won this match and then went on to win the tournament. Several sources confirm this as the Open Era record. 1 (1a), 2, 3. 4 (4a)
I did not find any source confirming that this is indeed a record.
Grand Slam matches
In the open era there were 5 occurrences when a player saved 9 match points and won a match at a Grand Slam tournament.
So if this information is correct, grand slam record in women's GS matches can be as high as 11 match points. (Not the 9 match points Rubin's record as claimed in the above links.)
All time records