Tomorrow is quarterfinal Wednesday for the men at Wimbledon. In the top half of the draw, it’s Roger Federer versus Tomas Berdych and Novak Djokovic against Yen-Hsun Lu. On the bottom, Andy Murray battles Jo-Wilfried Tsonga and Robin Soderling takes on Rafael Nadal. Conventional wisdom would pick Federer, Djokovic, Murray and Nadal as the semifinalists. Federer brings an 8-2 advantage into his quarterfinal against Berdych, although the top seed did lose to the Czech at the Sony Ericsson Open in Miami in March. Playing a looser, more relaxed brand of tennis these days, Berdych could extend Federer to four or five sets. But Federer’s solid straight-set victory over Jurgen Melzer on Monday, indicates the six-time champion is getting down to serious business after needing nine sets to dispose of his first- and second-round opponents. Federer edges Berdych. “I can tell you if I have a chance to step on the court, I will fight to the end,” said Lu. Well, Lu gets the chance after defeating Andy Roddick in the fourth round. Djokovic has too much game and wins in straight sets. Murray, the only player in the last eight not to drop a set, will be attempting to reach the Wimbledon semifinals for a second year in a row. He has a 2-1 record against Tsonga, all in hard-court meetings. Tsonga, playing only his fifth grass-court tournament, has never lost a five-set match. The Frenchman has an aggressive serve-and-volley game and if Murray is to win, he needs to do more than counter punch.“[Tsonga’s] got a big game and he’s a very good athlete,” Murray said. “It’s going to be a very, very tough match. He’s very exciting to watch. I’m sure there will be some great shots played in the match.” Tsonga tops the Brit. Nadal and Soderling will meet for the seventh time. Nadal leads 4-2. Soderling certainly holds the serving advantage on grass while Nadal moves better on the lawns. Nadal won their only grass-court match, 6-4, 6-4, 6-7 (7), 4-6, 7-5, a third-round encounter at Wimbledon in 2007. Nadal’s return game has not been as precise as usual the past week, and that could spell trouble for the Spaniard considering the ease with which Soderling can hold serve. The Swede avenges his loss to Nadal in this year’s French Open final. In the semis, Federer tops Djokovic and Soderling edges Tsonga. On Sunday, Soderling becomes the first Swede since Stefan Edberg in 1990 to win Wimbledon.