Wawrinka teams up with Annacone for grass swing

Stan Wawrinka has added esteemed-coach Paul Annacone to his team in a bid to boost his Wimbledon chances.

Winning Wimbledon would complete a career Grand Slam for Wawrinka, however grass has proven to be his most challenging surface.

The 32-year-old’s best result at the All England Club is consecutive quarterfinal appearances in 2014-15. Last year he lost in the second round.

Annacone is a former coach of both Pete Sampras and Roger Federer, the two most prolific grass-court players of the Open era.

The American, who was a commentator during the French Open, will work alongside Wawrinka’s current coach Magnus Norman during the upcoming grass court season.

“I have added Paul Annacone to our existing coaching staff to help during the grass-court season over the next four weeks,” Wawrinka said in a statement.

“Paul’s experience speaks for itself, having worked with some of the greatest players of all time. His knowledge can only better our understanding of the grass. It’s a real privilege and honour to add such a coach to our corner.”