The No. 1-ranked Djokovic is coming off three Grand Slam wins during a 70-6 season. The 24-year-old Serb ended his best season with two tired losses at the ATP World Tour Finals last month.

Djokovic will face Roger Federer in the semifinals on Friday, and Rafael Nadal will meet fellow Spaniard David Ferrer.

Ferrer earlier beat Jo Wilfried Tsonga of France 2-6, 7-6 (5), 6-2 in the six-man field of the $250,000 winner-takes-all exhibition.

(For more sports news and updates, follow Ahram Online sports on Twitter: @AO_Sports)