Tennis: Djokovic reaches Indian Wells semi-finals

World No. 1 Novak Djokovic swatted aside Jo-Wilfried Tsonga 6-3, 6-1 on Friday to book his semi-final berth at the Indian Wells Masters.

The Serbian star, whose run of 22 straight match victories includes 17 this season, didn't drop a point in four service games in the second set and claimed the match after 54 minutes when a demoralized Tsonga casually knocked a backhand wide.

Djokovic next faces either world No. 3 Andy Murray of Scotland or seventh-seeded Argentinian Juan Martin del Potro.

"I definitely feel happy about the performance today," Djokovic said. "I thought Jo didn't play his best -- his serve wasn't going well and that made life easier on court."

Djokovic claimed the first break in the fifth game. Tsonga double faulted to give his opponent the opportunity, and the Frenchman lost the next point when he could do nothing but net a reflex volley off a blistering low backhand from the Serb.

Three of Tsonga's four double faults came in the second set, including two to give Djokovic a triple break point in the second game.

The Frenchman saved two before Djokovic claimed the break and virtually sealed Tsonga's fate.

Tsonga served up another double on break point in the sixth game to leave Djokovic to serve for the match at 5-1.

Djokovic made sure Tsonga had no room to maneuver, giving himself triple match point with back-to-back aces.