MELBOURNE, Australia — Defending champion Novak Djokovic of Serbia has reached the Australian Open quarterfinals by beating 2006 runner-up Marcos Baghdatis of Cyprus.

Djokovic ran off the first five games Sunday while putting together a 6-1, 7-6 (1), 6-7 (5), 6-2 victory. He will face American Andy Roddick next.

The atmosphere was more like a soccer match, with large contingents from Melbourne's Greek and Serbian communities loudly cheering between points. The players got a late start and didn't finish until 2:26 a.m. Monday local time.