Even the scoreboard couldn’t keep up in John Isner’s marathon first-round match with Nicolas Mahut at Wimbledon.

The electronic sign keeping track courtside as the points passed and the game totals rose went blank while 23rd-seeded Isner of the United States and French qualifier Mahut played — and played and played — the longest match in tennis history, until action was suspended yesterday because of darkness at 59-59 in the fifth set.

“Nothing like this will ever happen again. Ever,” Isner said in a courtside TV interview.

The match already had been suspended because of fading light Tuesday night after the fourth set.

They have been playing each other for a total of exactly 10 hours — seven hours six minutes in the fifth set alone, enough to break the full-match record of 6:33, set at the 2004 French Open.

“He’s serving fantastic. I’m serving fantastic. That’s really all there is to it,” Isner said.

Also yesterday at Wimbledon, Roger Federer advanced to the third round by beating qualifier Ilija Bozoljac 6-3, 6-7 (4), 6-4, 7-6 (5). Aleksandra Wozniak of Blainville, Que., is not moving on after a 4-6, 6-2, 6-4 second-round loss to fourth-seeded Jelena Jankovic of Serbia.

Wozniak was the last Canadian in the singles draw after Stephanie Dubois was eliminated in the first round.