Though qualifier Denis Kudla, 25, fell to then-world No.1 Roger Federer , 7-6 (1), 7-5, on Saturday in the Gerry Weber Open semifinals in Halle, Germany, the alumnus of the Junior Tennis Champions Center in College Park and Arlington, Va., resident boosted his chances of qualifying for his second straight Wimbledon in men's singles. After his performance at Halle, Kudla rose to No. 83 in the ATP rankings, which puts him in strong position for one of the remaining Wimbledon wild cards. On Saturday, Federer needed 12 aces and saved six of the seven break points he faced to end Kudla's 10-set winning streak in Halle. The American had three break points when he was leading 4-3 in the second set, but Federer fought back and finished the set with two aces. Kudla, 25, had saved 20 of 21 break points on his way to the semifinals at the grass-court tournament.