Australian Open results

MELBOURNE - The following are the results at the Australian Open Tuesday.

Women’s singles, quarter-finals:

Dinara Safina, 3, Russia, def. Jelena Dokic, Australia, 6-4, 4-6, 6-4

Vera Zvonareva, 7, Russia, def. Marion Bartoli, 16, France, 6-3, 6-0

Men’s singles, quarter-finals:

Roger Federer, 2, Switzerland, def. Juan Del Potro, 8, Argentina, 6-3, 6-0, 6-0

Andy Roddick, 7, US, def. Novak Djokovic, 3, Serbia, 6-7, (3-7), 6-4, 6-2, 2-1 retired (heat exhaustion)

Women’s doubles, quarter-finals:

Daniela Hantuchova, Slovakia-Ai Sugiyama, 9, Japan, def. Cara Black, Zimbabwe-Liezel Huber, 1, US, 6-7 (0-7), 6-3, 7-6 (12-10)

Serena Williams-Venus Williams, 10, US, def. Hsieh Su-Wei, Taiwan-Peng Shuai, 16, China, 6-2, 4-6, 6-3

Nathalie Dechy, France-Mara Santangelo, Italy, def. Nuria Llagostera Vives-Maria Jose Martinez Sanchez, 11, Spain, 6-3, 7-6 (9-7), 7-6 (8-6)

Casey Dellacqua, Australia-Francesca Schiavone, 12, Italy, def. Anna-Lena Groenefeld, Germany-Patty Schnyder, Switzerland, 0-6, 7-5, 6-1

Men’s doubles, quarter-finals:

Mahesh Bhupathi, India-Mark Knowles, 3, Bahamas, def. Feliciano Lopez-Fernando Verdasco, Spain, 6-1, 2-6, 6-4

Lukasz Kubot, Poland-Oliver Marach, Austria, def. Mariusz Fyrstenberg-Marcin Matkowski, 6, Poland, 6-2, 6-2