Roger Federer insisted he will play on for many more years to come despite crashing out of Wimbledon in a shock defeat that brought his extraordinary Grand Slam run to a juddering halt. Though downbeat, the Swiss legend said he would not go into panic mode after being knocked out by unfancied Ukrainian Sergiy Stakhovsky in the second round on Wednesday. The world number three said there was perhaps a sea change happening in tennis where lower-ranked players now had the belief to mix it with the sport’s best, like himself, Novak Djokovic, Andy Murray and Rafael Nadal. Federer’s shock 6-7 (5/7), 7-6 (7/5), 7-5, 7-6 (7/5) loss to world number 116 Stakhovsky on his Centre Court stomping ground brought the curtain down on his run of 36 consecutive Grand Slam quarter-final appearances, which started at Wimbledon 2004. “I still have plans to play for many more years to come,” the seven-time Wimbledon winner said.