China's Li Na beat Venus Williams 2-6, 7-6 (4), 7-5 Wednesday in a marathon Australian Open quarterfinal that featured 110 unforced errors. The sixth-seeded Williams served for the match in the second set against No. 16 Li but was broken, forcing matters to the tiebreaker, which Li dominated. Williams held service in the first game of the third set and Li in the eighth, but in between there were six consecutive breaks of serve—and eight in the first 10.
Li broke Williams' serve again in the 11th game of the decider, then held to win on her third match point in 2 hours, 47 minutes. Li and Zheng Jie have become the first Chinese players to advance to the semifinals of the same Grand Slam tournament. In later matches, top-seeded Serena Williams was to face Victoria Azarenka for the final semifinal spot; top seed Roger Federer will also highlight men's quarterfinal action, opposing Nikolay Davydenko.