Novak Djokovic hopes Goran Ivanisevic can propel him towards a fifth Wimbledon title and beyond.

World number one Djokovic has recruited former SW19 winner Ivanisevic to work alongside coach Marian Vajda as they plot his assault on this year's championships.

Djokovic won six grand slam titles when he was coached by three-time Wimbledon champion Boris Becker, and he wants to harness the experience of another course and distance winner over the next fortnight.

"I called Goran and asked him whether he's available to come to Wimbledon and sort of give it a try, and have a little bit of a trial type of tournament where we get to know each other and see how it works," said Djokovic.

The second set began in identical fashion, Kohlschreiber breaking the Djokovic serve only to immediately drop his own.

Kohlschreiber, who beat Djokovic earlier this year in Indian Wells, fended off three break points to hold for 4-4, but the 15-time grand-slam winner stepped up a notch and found a way through at the end of the set.

It was a valiant effort from 35-year-old Kohlschreiber, but as Djokovic settled into the match suddenly points against his serve were becoming increasingly scarce.

The 32-year-old cranked up the pressure and two breaks from 3-3 in the third ensured he prevailed in just over two hours to set up a meeting with American world number 111 Denis Kudla in round two.