PARIS (AP) Roger Federer dropped a set before earning his record-breaking 234th Grand Slam match victory to reach the French Open’s third round.

Federer eliminated 92nd-ranked Adrian Ungur of Romania 6-3, 6-2, 6-7 (6), 6-3 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.