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Summary Tomas Berdych and Juan Martin del Potro joined Roger Federer in the Rotterdam Open quarter-finals.
Tomas Berdych and Juan Martin del Potro joined resting top seed Roger Federer in the Rotterdam Open quarter-finals on Thursday.Second seed Berdych advanced with only minimal effort as opponent Marcos Baghdatis quit with a left foot injury after 19 minutes on court while trailing 3-0 in their second round match.But Del Potro, the number three seed making his debut here, had a battle on his hands before he finally got past Slovak Karol Beck 6-4, 7-5.On Wednesday, Federer moved easily into the last eight at the Ahoy stadium when scheduled second round opponent Mikhail Youzhny withdrew a day before their contest with a left foot injury.Federer still had to go out and win his opening match against Frenchman Nicolas Mahut, which he did, 6-4, 6-4.Del Potro had to overcome a slight bloody nose which required a medical timeout early in the contest with Beck.Once that was sorted, it was back to work for the 2009 US Open champion, who advanced with nine aces - his last one earned two match points.Del Potro needed almost two hours to move into a match with the winner from Serb seventh seed Victor Troicki and the last local standing in Jesse Huta Galung.Frenchman Richard Gasquet, seeded fifth, continued his steady progress at his second tournament appearance, defeating Russian Alex Bogomolov 6-3, 6-2 while Italys Andreas Seppi dispatched German Philipp Kohlschreiber 6-4, 6-2.His quarter-final with Davydenko is a repeat of the match he won this month in Montpellier, taking his record over the veteran Russian to four wins in five encounters.
