Next up: Dance Party. (Matthew Stockman / GETTY IMAGES)

Facing two match points against the great champion Federer, Djokovic turned on a 108-mph serve from Federer, zinging a cross-court winnerjust shy of the line. Djokovic raised his hands to the pro-Federer crowd and got the emotioal boost he was seeking. He was stoked, saved another match point and rallied from a two-set deficit for a 6-7 (7), 4-6, 6-3, 6-2, 7-5 victory that sends him to Monday’s final.

“It was definitely the biggest win of this year, one of the biggest wins of the career under the circumstances,” Djokovic — now 63-2 in 2011 — said. “Roger was in control [after two sets], playing better. I switched gears and played much better over three sets.”

Afterward, with the crowd in the palm of his hand and because he’s nothing if not a devotee of the post-victory shaking of the groove thing, he danced a little.