DUBAI, United Arab Emirates -- Novak Djokovic opened the defence of his Dubai Championships title with a straight sets victory over Denis Istomin, while second-seeded Juan Martin del Potro had to retire from his first-round match on Tuesday. Vegas Golden Knights Store . Top-seeded Djokovic, who is making only his second appearance this year after reaching the quarterfinals of the Australian Open, was a 6-3, 6-3 winner over 54th-ranked Istomin of Uzbekistan. "It wasnt as easy as the scoreline indicates," said Djokovic, who has won in Dubai on four occasions. "I needed to work for my games. "Having not played for more than four, five weeks, an official match, obviously it takes its toll on the court." Djokovic saved all four break points he faced on serve and broke Istomin three times -- in the third and ninth games of the first set and in the second game of the second set. Del Potro was not so fortunate, being forced to retire against Somdev Devvarman of India after losing the first-set tiebreaker 7-6 (3). Since winning the Sydney title last month, Del Potro has been struggling with a left wrist injury that has conjured up memories of similar pain he experienced in his right wrist four years ago. In 2010, the year after he won the U.S. Open, he played only three tournaments before and after surgery on his right wrist. Del Potro was fighting back tears in Dubai when he came to talk to the media after his retirement. "I dont feel really well," he said. "My wrist is hurting a lot and everybody knows what happened to me four years ago with my other wrist. "It was really tough to play today. I tried everything. I cannot be the player I would like to be." Having felt the pain in his left wrist during the Australian Open, Del Potro went at the end of January to consult with Dr. Richard Berger, who performed his right wrist surgery at the Mayo Clinic in Minnesota. The doctor recommended a course of physical therapy. Asked if he would have kept playing if he won the first set, Del Potro said: "I dont think so, no. It was hurting too much." Devvarman, a wild card who won a challenger in New Delhi last week, hit a service winner on his third set point in the tiebreaker. That proved to be the final point of the match. "Its unfortunate, especially for a guy like him," Devvarman said. "I realized he wasnt comfortable hitting backhands and I tried to make him hit as many as I could, and he wasnt really hitting over it so I knew he wasnt happy." Third-seeded Tomas Berdych extended his winning streak to eight matches with a 6-3, 6-4 win over Romanian qualifier Marius Copil. Berdych, who reached the final in Dubai last year, won the Rotterdam title two weeks ago. Fifth-seeded Jo-Wilfried Tsonga of France secured a 6-2, 6-4 win over Victor Hanescu of Romania. Cheap Golden Knights Jerseys .com) - The Anaheim Ducks and Los Angeles Kings are ready to put all the talk and hype surrounding their meeting at Dodger Stadium behind them. Fake Golden Knights Jerseys . Yet coming off consecutive series losses at St. Louis and Pittsburgh, Los Angeles needed some sort of spark as August approaches. The Dodgers found it in the ballpark of their biggest rival, and left the Bay Area in first place following an emphatic three-game swing. https://www.cheapgoldenknights.com/ . For the first time all night, as the Raptors were on the clock to make the 20th overall selection, no one had the slightest idea what was about to happen. No leaks, no whispers, nothing.Happy birthday to Stephen Ames. And this is not just any birthday. Today, the Calgarian turns the big Five-Oh. So is the four-time winner on the PGA Tour happy about his big day? "Hell no. Its 50! Who wants to get there?" Ames chuckled in mock protest. "Actually, Im OK with it - its just a number." But its a big number, one that makes him eligible for the Champions Tour, that career mulligan circuit for the older set. He will make his official debut as an Old Guy on May 22 at the Senior PGA Championship, one of that tours five majors. "I look at it as being fortunate," Ames said, "because I have another place to play. Someone referred to it the other day as the back nine of my career. For me, it means I have 15 more years of golf and having fun with it and not having to worry about a job or a pay cheque coming in. Im pretty much set - its nice." Ames is ready to compete on the Champions Tour and thinks he can play well. Compared to many of the older guys, hes in great shape. His back problems that troubled him years ago havent been an issue for some time and in preparation for his move to the 50-and-over tour, hes lost 11 pounds. "Ive been working out hard," he said, "doing some hard cardio. Its not about weights for me, its cardio and all of a sudden the weight started dropping off. I was a size 35 pant and now Im slipping into 32s." Ames, who is being inducted into the Canadian Golf Hall of Fame later this year, has also been working hard on his game, adding some distance to his drives and concentrating on his scoring clubs. Those will come in handy on a tour where the courses are 7,000 yards as opposed to the 7,500 hes been playing. "I expect to play well," he stated. "The only difference is that instead of hitting 3-irons into greens, Ill be hitting 9-irons." After years of working with Sean Foley, Ames parted ways with the guy he brought to the PGA Tour last year. The two remain ffriendly but Ames found it hard to get time on Foleys busy schedule. Vegas Golden Knights Shirts. So hes been seeing Calgary swing coach Paul Horton, and is happy with the new relationship. "The changes Im making, Im understanding them and Im starting to hit it further, which is a bit scary," he said. "The hard thing were struggling with right now is keeping it on the golf course. Thats just because Im not quite secure with it yet. But overall, Im definitely seeing the difference. Im not as short as the numbers are saying right now." In addition to less mileage on the scorecard, Ames is also looking forward to the more relaxed atmosphere on the Champions Tour, which he says will fit his personality. Its definitely a fan-friendly circuit and the out-going Ames believes hell enjoy that part of it, something thats been missing from the current PGA Tour. "Im going to get to be me a little more," he said. "The guys out here [on the PGA Tour] as so serious and stern-faced and there are no smiles... Im still enjoying it out here but its tougher and so thats why Im really looking forward to the Champions Tour." Ames will spend this year going back and forth between the two tours, playing 20 on the PGA Tour and filling in the rest of the season on the Champions Tour. For the first time in his career, hell also get a home game, teeing it up in the Shaw Charity Classic, the stop in Calgary. Sleeping in his own bed while playing a tournament is something hes never done, but hes looking forward to helping the tournament become even more successful than its maiden run last year. As he did on the PGA Tour, Ames will take to the Champions Tour in his own way. On the course, he should be a contender with that silky smooth swing of his. Off it, he will be the same guy too -- he never worries much about what others think and hes not afraid to say whats on his mind. Thats refreshing. Stephen Ames leads a stress-free life and thats a good way to be. ' ' '