The beefed-up Australian, better known for his baseline tenacity, smacked 15 aces past the Czech as he advanced.

Also Read Wimbledon 2005: Complete coverage

Champion in 2002, Hewitt next faces Justin Gimelstob after the American beat Olympic [Images] champion Nicolas Massu of Chile 6-3, 4-6, 7-6, 7-6.

Hewitt is seeded to meet champion and top seed Roger Federer [Images] in the semi-finals.

Results from the Wimbledon Men's Singles matches on Wednesday:

Round 2: 
3-Lleyton Hewitt (Australia [Images]) beat Jan Hernych (Czech Republic) 6-2 7-5 3-6 6-3

25-Nicolas Kiefer (Germany [Images]) beat Alessio Di Mauro (Italy [Images]) 6-3 7-5 6-3

21-Fernando Gonzalez (Chile) beat Tomas Zib (Czech Republic) 6-4 7-6(6) 6-3

Jonas Bjorkman (Sweden) beat 8-Nikolay Davydenko (Russia [Images]) 6-7(4) 1-2 RET

1-Roger Federer (Switzerland [Images]) beat Ivo Minar (Czech Republic) 6-4 6-4 6-1

Justin Gimelstob (United States) beat 29-Nicolas Massu (Chile) 6-3 4-6 7-6(5) 7-6(0)

23-Juan Carlos Ferrero (Spain) beat Hyung-Taik Lee (South Korea) 6-4 3-6 4-6 6-3 6-3

5-Marat Safin (Russia) beat Mark Philippoussis (Australia) 7-6(4) 7-6(4) 6-4

24-Taylor Dent (United States) beat Kevin Kim (United States) 6-3 6-4 6-4

26-Feliciano Lopez (Spain) beat David Sherwood (Britain) 6-2 6-4 6-2

Tomas Berdych (Czech Republic) beat Lars Burgsmueller (Germany) 6-3 6-3 6-1

Round 1
9-Sebastien Grosjean (France [Images]) beat Michael Llodra (France) 3-6 7-5 4-6 7-6(5) 6-4

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