( CNN ) -- If this is an indication of what Roger Federer will do at Wimbledon , his opponents had better watch out . Federer recorded the second double bagel of his career when he defeated wildcard Mischa Zverev 6-0 6-0 on Friday to reach the semifinals of a Wimbledon warm-up in Halle , Germany . The only other time Federer did n't drop a game in a match was at the year-end championships in 2005 against clay-court specialist Gaston Gaudio . `` You never go to court aiming for such a score , '' Federer , who turns 32 in August , told reporters . `` I 'm surprised to have managed it today . '' At Wimbledon , which begins on June 24 , Federer will be bidding to advance to a first grand slam final since claiming a seventh title on the Wimbledon grass a year ago . He lost to Tomas Berdych in the U.S. Open quarterfinals last September , Andy Murray in January 's Australian Open semifinals and Jo-Wilfried Tsonga in this month 's French Open quarterfinals . Federer knows the chances of registering a second consecutive double bagel are slim . He meets local favorite and the man who beat him in last year 's final in Halle , Tommy Haas , in the last four . `` I expect a completely different opponent tomorrow , '' Federer said . Haas and Federer , good friends , played doubles together this week in Halle . `` He is one of the greatest of all time , perhaps the greatest , '' said Haas . Haas , the 35-year-old third seed , rallied from a set down to oust Gael Monfils 6-7 ( 4 ) 6-3 6-3 . But he was the only German winner on the day . Besides Zverev , sixth-seed Philipp Kohlschreiber and eighth-seed Florian Mayer were also sent packing . French second-seed Richard Gasquet topped Mayer 6-3 7-6 ( 4 ) and Russian Mikhail Youzhny beat Kohlschreiber , the 2011 champion , 6-3 6-2 . At Queen 's Club in London , the other men 's warm-up taking place this week , top-seed Andy Murray progressed to the semifinals with a 6-4 7-6 ( 3 ) victory over Germany 's Benjamin Becker . The Scot returned from a back injury at Queen 's and has n't lost a set in his three matches , despite several stops and starts due to rain . He has shared the spotlight at Queen 's with veteran and four-time winner Lleyton Hewitt . `` I thought the first set was good , and then he started playing much better in the second , '' Murray said in a televised interview . `` I just managed to hang tough and get the win . The conditions were tough , again , but it 's only my first week on grass . '' While Federer tries for an eighth success at Wimbledon , Murray will attempt to end a 77-year British men 's singles drought at the All England Club . His next foe is fourth-seed Tsonga , who suffered a painful semifinal defeat to David Ferrer on home soil at the French Open . Tsonga eased past young American Denis Kudla 6-3 6-2 . Hewitt , who has endured multiple hip operations , toppled Juan Martin del Potro 6-2 , 2-6 , 6-2 . Del Potro , still learning the finer points of playing on grass , missed the French Open due to illness . `` I 'm still hanging in there , '' the 32-year-old Hewitt said . `` The last four or five years have been tough with surgeries , but mentally I feel fresh . '' As in Halle a back-to-back winner remains a possibility because Croatian Marin Cilic , the fifth seed , edged Berdych 7-5 7-6 ( 4 ) . Cilic almost exited in the third round , trailing Feliciano Lopez 5-2 in the third set before staging a comeback .
Roger Federer does n't lose a game against his quarterfinal opponent . Federer next faces doubles partner Tommy Haas on the grass in Halle . Andy Murray reaches the final at Queen 's Club event in London .