Federer, who already has two titles in 2018 after victories in Australia and Rotterdam, took the first set 6-3 against Argentina's Federico Delbonis in just under 40 minutes.
Djokovic was stunned by world no. 109 Taro Daniel of Japan in three sets - 7-6 (3), 4-6, 6-1 at Indian Wells. Djokovic who had been out of action for nearly two months after his defeat against Korean Chung at the Australian Open had taken the second half of 2017 off to heal from an elbow injury.
He won five titles by the end of the season, including the US Open and Masters Cup and no one could stop him at the beginning of 2007 as well, dominating at both the Australian Open and Dubai to clinch 7 straight titles and win a career-high 41 matches in a row!
Djokovic said it felt like the "first match I ever played on the tour". "Extremely grateful to play with such greats of the game @AndreAgassi", an ecstatic Lock posted on his Twitter account, accompanied by a picture of him with Djokovic, Agassi and Stepanek.
"I just completely lost rhythm, everything, struggled a little bit with the health the last couple of weeks".
The match was tied 2-2 in the second set when it was halted Saturday. "So talking about faster, I just think there is more bounce to it, especially if you play someone who has a lot of spin like he has and kicks the ball around a lot". "It gave me a ton of inspiration for my upcoming matches", he said.
"And even though you don't have pain, you are still thinking about it, because it has been something that I have been feeling and dragging for over two years", Djokovic said. When you do come back from injury or when you haven't played in a long time, it just takes extra effort.
BC-TEN-Indian Wells, 2nd Ld-Writethru, 522Federer moves on, Stephens loses again at Indian WellsAP Photo CACH101, CACH103, CACH102, CACH117Eds: Adds other results. It is still early stages for Novak coming back and the first one after surgery.
The Indian Bhambri will meet 18th-seeded Sam Querrey in the third round after the big-serving American accounted for Germany's Mischa Zverev 6-4 7-5.
The win sets up a third round showdown with Spaniard David Ferrer who defeated Tennys Sandgren of the United States 6-2, 7-6 (7/3). Also losing was No. 12 Julia Goerges of Germany, 6-3, 6-3 to No. 21 Anastasjia Sevastova of Latvia.