Djokovic and Wawrinka renew age-old rivalry for first time on grass

Novak Djokovic will play Stan Wawrinka for the 27th time in a storied rivalry when they clash on Friday but surprisingly they have never played each other on grass, let alone at Wimbledon.

The two faced off for the first time in the 2006 Croatia Open final when Djokovic retired with breathing issues and, though the Serbian has dominated in the years since with a 20-6 record, some old wounds have still not healed.

"He took away two Grand Slams from me. That's the role he played (in my career), beating me in two Grand Slam finals," a smiling Djokovic said ahead of their third round encounter on Centre Court.

Wawrinka reached the peak of his career between 2014-2016, a period when he seemed like the only man capable of breaking the hegemony of the 'Big Four' - Roger Federer, Rafa Nadal, Andy Murray and Djokovic.

Wawrinka sensationally won three Grand Slam titles, beating Djokovic at Roland Garros and Flushing Meadows.

A series of injuries have reduced the 38-year-old Swiss great to a player who no longer thrives on gruelling marathon encounters but he still commands respect in the eyes of Djokovic, who praised his resilience.

"After several knee surgeries, he keeps going strong and trying to create some more history for himself and tennis," Djokovic said.

"We cannot forget that he's a three-time Grand Slam champion, Davis Cup winner and also (won) Olympic gold (in doubles). He had a fantastic career."

Wawrinka is a bit more realistic, however, saying those special victories are nothing more than "great memories".

"It was a part of my career that I was playing such a good level that I knew when I was entering on court against Novak in a Grand Slam I was able to beat him," Wawrinka said.

"Hopefully I can make a competitive match but