Federer has to at least reach the semi-finals this week to make sure he retains his world No 1 ranking and, despite losing his serve early in the first set, he outmanoeuvred the Serbian in a 6-2 6-1 victory, which lasted 58 minutes. "Back in the day I used to play six matches in the row".
That levelled the score at 30-30 and Wozniacki won two out of the next three points she needed to take the third set and the match in the $16 million joint WTA/ATP hardcourt tournament.
The clouds rolled in just before the start of their match Saturday and after a short delay to start the first set they managed to play until the skies blackened and the heavy rains came in the second.
Federer won nearly 60% of the points on the return and there was nothing Filip could do to prolong the match and be more competitive.
But world number one Federer, who won his own contest with Federico Delbonis, had expected that Djokovic would find it tough getting back into the swing of things on the ATP Tour.
Djokovic had further surgery on a persistent elbow injury in February. "I was actually pretty nervous playing the match", Daniel said in his news conference.
GETTYRafael Nadal and Novak Djokovic are struggling with injury
"I mean, a bit of both, I guess", he said.
Djokovic was beaten 6-7, 6-4, 1-6 by world No109, Taro Daniel, who had made the main draw as a qualifier. He lost to Chung Hyeon in the Australian Open fourth round in January before undergoing the surgery. His backhand, traditionally his most consistent and game-breaking weapon, bled errors-32 in all.
Daniel's third-round opponent is Argentina's Leonardo Mayer, who had been scheduled to play Japan's Kei Nishikori in the second round before the world No. 25 withdrew through illness. The No. 3, 4, 6, 9, 11, 12, 13, 14 and 15 seeds are all gone.
Another surprise victor was Cyprus' Marcos Baghdatis, who beat Argentina's Diego Schwartzman, who is seeded 14th, 7-5, 6-4. Even though I served my five aces yesterday, I hit none today.
He will now play against another American, Jack Sock, who beat Italy's Thomas Fabbiano 6-2, 7-5.