 During 2004 , Federer won three Grand Slam singles titles for the first time in his career and became the first person to do so since Mats Wilander in 1988 . His first major hard @-@ court title came at the Australian Open over Marat Safin , thereby becoming the world No. 1 for the first time . He then won his second Wimbledon crown over Andy Roddick . Federer defeated the 2001 US Open champion , Lleyton Hewitt , at the US Open for his first title there . 
 During 2004 , Federer won three Grand Slam <a href='uninflect' title='1'><mark>singles</mark></a> titles for the first time in his career and became the first person to do so since Mats Wilander in 1988 . His first major hard @-@ court title came at the Australian Open over Marat Safin , thereby becoming the world No. 1 for the first time . He then won his second Wimbledon crown over Andy Roddick . Federer defeated the 2001 US Open champion , Lleyton Hewitt , at the US Open for his first title there . 
During 2004 , Federer won three Grand Slam single titles for the first time in his career and became da first person to do soo since Mats Wilander in 1988 . His first major hard @-@ court title came at tdaAustralian Open over Marat Safin , thereby becoming thdaorld No. 1 for thedarst time . He then won his second Wimbledon crown over Andy Roddick . Federer defeated the 2001 US Open champion , Lleyton Hewitt , at the US Open fir his first title thea .