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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. Craig Smith Jersey . 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. Nashville Predators Jerseys . -- LaMarcus Aldridge returned to the Trail Blazers lineup, happy to know that things didnt go awry without him. Kyle Turris Jersey . Huntington doesnt want to help run the club unless Hurdle is in the dugout. The combination thats returned the franchise to respectability will remain intact for years to come. http://www.authenticpredatorspro.com/Juuse-saros-predators-jersey/ . The Cubs made the moves before Thursdays game against Arizona. They promoted left-hander Zac Rosscup and right-hander Neil Ramirez from Triple-A Iowa and optioned righty Blake Parker to their top minor league team.The red-hot Los Angeles Kings will aim for a seventh straight victory and a 3-0 lead in their second round Western Conference series when they host the Anaheim Ducks in Thursdays Game 3 battle at Staples Center. Watch the Ducks vs. Kings live on TSN tonight at 9:30pm et/6:30pm pt. The Kings, of course, were down 3-0 in the opening round against San Jose before becoming only the fourth team in NHL history to win a best-of-seven series after losing the first three meetings. L.A. hasnt slowed down a bit since completing that first-round comeback with a Game 7 win in San Jose, claiming the first two games of this series on the road. The Kings posted a 3-2 overtime win in Anaheim on Saturday before grabbing a 2-0 series lead with Mondays 3-1 triumph at the Honda Center. The Kings have gone on a few long playoff winning streaks in recent years. The club won eight straight at one point in 2012 en route to winning the franchises first Stanley Cup title and had a six-game winning streak last spring before falling in the conference finals to Chicago. "We just take it one game at a time, shift at a time, period at a time. All those things like that," said head coach Darryl Sutter of his teams current winning streak. Anaheim, meanwhile, hopes it can halt L.A.s hot streak on Thursday and avoid falling behind 3-0. A seventh straight win by the Kings would give them a chance to close the series with a sweep Saturday at the Staples Center. The top-seeded Ducks finished 16 points ahead of Los Angeles in the Pacific Division standings and went 4-0-1 against the Kings during the regular-season series, but so far that success hasnt translated to the playoffs. "We know we can beat this team," said Ducks defenseman Ben Lovejoy. "We feel weve had pretty even games, and theyve come out on top. I truly believe the playoffs are all about momentum. Right now, we need to put a seed of doubt in their mind. If we win (Game 3), its a 2-1 series and we have momentum. We can do that." The Kings jumped on Anaheim early in Game 2, with Marian Gaborik scoring just 34 seconds into the contest. Anaheim tied it near the midway point of the first, but Alec Martinnez scored the game-winner for L. Filip Forsberg Jersey. A. at 12:07 of the first. The score remained 2-1 until Dwight King added an empty-netter in the closing minute of the third period. "Well enjoy this one night, but we have a lot of work to be done still," said Martinez. Jonathan Quick turned away 36 shots to anchor the win for the Kings. The 2012 Conn Smythe winner had stopped 69-of-72 shots sent his way in this series for a save percentage of .958. Gaborik also is having a strong series for L.A., recording three goals and an assist over the first two games to give him nine points (6 goals, 3 assists) in nine games this postseason. The Slovakian sniper was the hero of Game 1, tying it late in regulation before scoring the winner 12:07 into overtime. Anze Kopitar has been on fire for the Kings as well, notching at least one point in all nine of the clubs postseason games this spring. The star centerman had an assist on Monday and leads all skaters in the playoffs with 14 points (4g, 10a). Kopitar has reached the scoresheet in all nine games this postseason. Patrick Maroon scored the only goal of Game 2 for the Ducks, who had won all three of their home games in a 4-2 series win over Dallas in the opening round. Jonas Hiller gave up two goals on 16 shots in the loss. "This series isnt over. We can go to Staples Center, get a few bounces and bring this series back tied," said Anaheim head coach Bruce Boudreau. The Ducks were 3-0 on the road against the Kings during the regular season, but one of those wins came outdoors at Dodger Stadium on Jan. 25. Thursdays battle will mark the first postseason game between the clubs at the Staples Center, as this series marks the first playoff encounter between L.A. and Anaheim. The Kings played Monday without defensemen Willie Mitchell and Robyn Regehr in the lineup and both players could be out again with undisclosed injuries. Mitchell last played in Game 6 against San Jose, while Regehr has been out since leaving in the first period of Game 1 against Anaheim. Matt Greene has filled in for Mitchell in the lineup, while Jeff Schultz replaced Regeh