Andy Murray says there were “some great moments” for him during this appearance at Wimbledon but the way he played is also “extremely frustrating.” The two-time Wimbledon champion says he considers it a positive that he managed to play three Grand Slam matches without getting injured. He hadn’t played singles at the All England Club in four years after having a pair of hip operations. After his straight-set loss to No. 10 seed Denis Shapovalov at Centre Court on Friday night, the 34-year-old Murray said: “If I’m going to put that much effort in, I want to be performing better than what I did here.” Murray lost 6-4, 6-2, 6-2. The Scotsman, mounting his latest comeback after two hip operations, delighted Centre Court fans with two grueling wins this week. But they had little to cheer about in Murray’s match against Shapovalov, who had a 45–16 edge in winners and …