Isner was helped by a very generous netcord on his first point at 64-64, but held very crisply from then on for a hold to 15.
Isner clearly going for more on his returns. A hard return up the middle drew an error on the first point of 65-64, and even though Mahut held to 15, he was made to work harder for it.
65-65. 130 games.