( CNN ) -- Defending champion Roger Federer will seek to claim his fourth Cincinnati Masters title on Sunday when he faces Mardy Fish . The third seed Federer leads Fish 5-1 in career meetings , but Fish beat Federer in their last meeting in 2008 at Indian Wells , according to ATP World Tour 's Web site . In Saturday 's semifinal , Fish beat fellow American ninth seed Andy Roddick 4-6 , 7-6 ( 3 ) , 6-1 after rallying from a set down and near-defeat in the second set , according to ATP World Tour . Two rain delays went in favor of Fish , the first coming when Roddick led 5-4 in the first set , giving each players an hour respite . The second delay came during the second set when Fish was facing near-defeat at 2-5 . Fish would return and force a tie-breaker , which he 'd win , followed by a dominant deciding set . `` I 've never felt better on the court , and I 've never been more confident and I 've never played better , '' Fish said , according to ATP World Tour 's Web site . `` I 've won a lot of matches this summer . [ The weight loss ] has a ton to do with it , '' he added , referring to some 30 pounds ( 13.6 kilos ) he has shed . Of the weather , Roddick said , according to ATP World Tour , `` That 's the thing with rain delays . The momentum can shift really fast . '' Federer , playing against Cypriot Marcos Baghdatis in the other Saturday semifinal , won handedly 6-4 , 6-3 . The five-time ATP World Tour No . 1 from Switzerland dropped only three points on first serve and attributed a more aggressive game , including rushes to the net , to his downtime since Wimbledon . `` After Wimbledon I had six weeks to work on a few things . On the hard courts it 's nice to play forwards and not always be defensive and let the other guy dictate , '' ATP World Tour quoted Federer as saying . `` I 'm happy that the hard work is paying off right away . '' Baghdatis , now ranked 20th , on Friday upset world No . 1 Rafael Nadal for the first time in his career following six defeats to the Spaniard . Federer is seeking only his second title this year following January 's Australian Open success .
Fish beats fellow American Andy Roddick 4-6 , 7-6 ( 3 ) , 6-1 . Federer , playing against Baghdatis in the other semifinal , wins 6-4 , 6-3 . Baghdatis had earlier upset Nadal .