Rafael Nadal matched his best career start to an ATP Tour season with a victory Tuesday in his first match since capturing the Australian Open title, reaching the second round of the Mexican Open.

Defending champion Novak Djokovic survived a rocky third set to defeat American qualifier Denis Kudla to reach the last 16 at Wimbledon for the 13th time on Friday.

Novak Djokovic received treatment before the start of the third set against Stan Wawrinka but soon threw in the towel, the 6th time he has retired at a Grand Slam tournament.

Novak Djokovic was captured on video having a talk with a fan during his pre-match practice session.

Novak Djokovic will meet Stan Wawrinka, the man who beat him in the US Open final three years ago, for a place in the last eight.

Roger Federer's win over Denis Kudla was his 20th in a row on grass, dating to June, 2017.

Third seed Roger Federer defeated wild card Denis Kudla 6-4, 6-1 in the second round of the ATP/WTA Indian Wells tournament on Sunday.