Germany’s Alexander Zverev failed to retain his Hamburg title and suffered a blow before the Paris Olympics after Frenchman Arthur Fils beat him 6-3, 3-6, 7-6 (7-1) in Sunday’s final. The top seed had looked doubtful for the clay tournament after injuring his knee on the Wimbledon grass but managed to get fit and shine during the week, only to come up short in the deciding tie-break. Zverev, who sprayed Fils with champagne on the podium, said: “It was an incredible week that I will never forget, even if it didn’t work out with the title defence. “We want to be number one at the end of the year…