Reaching his first grand slam semi-final earlier this month at Wimbledon left seventh-ranked Milos Raonic disappointed in his effort and more motivated to capture his first major title. The 23-year-old Canadian begins his push to the US Open, what he calls "a very important slam for me", this week at the US$1.9 million ATP and WTA Washington Open. I can play better than I did at Wimbledon.That doesn't put me very far away from being able to win the tournament [US Open] Milos Raonic "I felt I could have done much better in that situation," Raonic said of his 6-4, 6-4, 6-4 loss to Roger Federer in the Wimbledon semi-finals. "It has been a lot of frustration, anger and disappointment with the semi-final. It has been transformed into a lot of motivation. I hate losing. The stinging stays with me." That pushes Raonic, the second seed at Washington behind fifth-ranked Czech Tomas Berdych, as the huge server looks forward to the US Open on his favourite hard-court surface and coming off his best slam efforts, his Wimbledon breakthrough and a French Open quarter-final run. "I can play better than I did at Wimbledon," Raonic said. "That doesn't put me very far away from being able to win the tournament [US Open]." Raonic has taken the positives from his grass-court success during a break that included a mini-fitness camp. "It was great for a lot of reasons," he said. "It gave me a lot of new highs, great experience, a lot of confidence. "I understand better how to win matches, how to deal with situations, how to deal better with big moments. I feel very eager to get going with the summer hardcourt swing." Raonic looks forward to testing how his game has evolved and how to better exploit his tremendous serve, which has him ranked second in ATP first serve points won on 82 per cent and third in aces with 567. "I believe I have a better understanding of the damage I can do," Raonic said. "People don't like to play me. I better understand how to use that to my advantage and get more wins from it. "I have improved in a lot of areas, whether that be technically in shots or as an athlete." Raonic sees a major chance to make a jump into the top five for the first time in his career, although he admits French Open winner Rafael Nadal and Wimbledon champion Novak Djokovic remain a class apart. "I think there's a big opening," he said. "The biggest barrier is the threshold that Novak and Rafa have on the 1-2 spots."