Roger Federer dropped a set before earning his record-breaking 234th Grand Slam match victory to reach the third round of the French Open.

Federer eliminated 92-ranked Adrian Ungur of Romania 6-3, 6-2, 6-7 (6), 6-3 on Wednesday to break a tie with Jimmy Connors for most career wins at major tournaments in the Open era, which began in 1968.

The 16—time Grand Slam champion is now 234—35 in tennis’ top four tournaments, an .870 winning percentage.

Ungur, meanwhile, is 1—1; the French Open was his Grand Slam debut.

Seeded third this year at Roland Garros, where he won the 2009 title, Federer is on course for a semifinal showdown against No. 1 Novak Djokovic, who won in straight sets Wednesday.

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