Djokovic, Sabalenka through to Brisbane quarters, China's Yuan Yue out

SYDNEY, Jan. 2 (Xinhua) -- Top seeds Novak Djokovic and Aryna Sabalenka won through to the quarterfinals at the Brisbane International on Thursday, while China's Yuan Yue was knocked out of the tournament.

Djokovic extended his career unbeaten streak against French veteran Gael Monfils to 20 matches with a 6-3, 6-3 win in one hour and 12 minutes on Thursday night at the key warm-up event for the Australian Open.