Equaling the record for the latest finish at the U.S. Open, Philipp Kohlscreiber of Germany eliminated John Isner of the United States 6-4, 3-6, 4-6, 6-3, 6-4 at 2:26 a.m. local time Monday to reach the fourth round.
The official completion time was the same as a second-round match in 1993, when Mats Wilander beat Mikael Pernfors. The latest finishing match at any Grand Slam was the 4:34 a.m. end to Lleyton Hewitt's third-round encounter against Marcos Baghdatis at the 2008 Australian Open.
''Of course, it's very late, so everybody here is really a crazy tennis fan,'' the 19th-seeded Kohlschreiber told the few fans who remained during an on-court interview.
He won his sixth consecutive five-setter. No. 9 Isner, the highest-seeded American man, dropped his fourth in a row - and did it in angry fashion, getting docked a point for smashing a racket. It caps a disappointing Grand Slam season for Isner, who didn't make it past the third round at any of the four major tournaments.