Roger Federer broke yet another record on Wednesday as he defeated Adrian Ungur in four sets to break Jimmy Connors record of 233 grand slam match victories.
The Swiss ace was expected to come through the match with few concerns but he did drop the third set as he set a new record of 234 victories and just 35 losses in Grand Slam events.
Federer eventually came through the contest 6-3 6-2 6-7 (6-8) 6-3 to reach the third round where he will face either Slovakia's Martin Kirzan or Nicolas Mahut of France.
The 16-time grand slam winner was expecting to face old foe David Nalbandian in the second round but he lost to Ungur, who had failed to qualify for a major on the last 13 occasions.
Federer cruised in the opening two sets as he was never put in any trouble on his own serve, but it was all change in the third set as Ungur began to enjoy the occasion.
Ungur had two set points at 4-5 before Federer managed to hold serve and eventually force a tie-breaker which went the way of the Argentinean.
After two hours and 27 minutes it was Federer who eventually prevailed as he saved a break point early in the set before taking control and booking his place in the third round.
Elsewhere their were victories for Juan Martin del Potro who overcame Edouard Roger-Vasselin to win 6-7 (7-5) 76 (7-3) 6-4 6-4 and Marin Cilic who beat Juan Carlos Fererro 7-6 (7-4) 6-2 6-3 to set up a third round clash with the Argentinean.