Feliciano Lopez moved into the Dubai Championships semi-finals after Novak Djokovic was forced to withdraw from their quarter-final. A below-par Djokovic informed the umpire of his decision after Lopez took the opening set 6-3 - but the world No 1 was clearly struggling with an eye condition and could not continue.Lopez broke in the opening game of the match and Djokovic was forced to see the trainer after three games. Lopez held onto his advantage before a second break in the ninth game gave the Spaniard the first set, before Djokovics dramatic exit. The Serb, a four-time champion in Dubai, had recorded the 700th win of his career earlier in the week but having chalked up 14 victories already this season, he was forced to pull out of the event.Lopez is through to face Cyprus Marcos Baghdatis, who was a surprise 7-5 6-0 winner over Spanish fourth seed Roberto Bautista Agut earlier in the day.Earlier, Stan Wawrinka moved into a highly-anticipated semi-final against Nick Kyrgios with a comfortable 7-5 6-1 victory over Philipp Kohlschreiber.The clash between Wawrinka and Kyrgios on Friday will be the first contest between the pair since their infamous match in Montreal last August. Stan Wawrinka is through to a semi-final with Nick Kyrgios Against Kohlschreiber, Wawrinkas three breaks proved enough to edge a topsy-turvy opening set that saw five dropped service games. The Swiss ace and second seed flew into a 2-0 lead, only for Kohlschreiber to bounce back with the next two before Wawrinka re-established his two-game lead to seize the initiative.However, his German opponent fought back again to level matters before Wawrinkas crucial break in the 12th game of the match saw him clinch the opening set.A more straightforward second set saw Wawrinka take control with his backhand beginning to find its range and he opened up a 4-1 advantage before a further break gave him a four-game cushion, which he rubber-stamped by winning five successive points from 0-40 down to hold serve and wrap up the match.You can follow all the action from the Dubai Championships semi-finals on Friday, live on Sky Sports 3 from 1pm on Friday. Dubai Championships - Semi-Finals Feliciano Lopez v Marcos Baghdatis Nick Kyrgios v Stan Wawrinka Also See: Kyrgios sees off Berdych Ferrer falls in Acapulco ATP schedule Tennis on Sky Nike NBA Jerseys . 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Lou Williams scored 25 points and the Hawks continued their offensive upswing as they rolled to an easy 118-85 victory over the Jazz on Friday night, winning their third straight and for the fourth time in five games. Dan Roundfield Jersey Signed . The third-ranked Ivanovic, who won the event in 2008 and 10, served five aces and broke Wickmayer, also a former winner in 2009, five times. "The result looked easier than it really was," Ivanovic said. ELVERSON, Pa. -- Past champion Scott Harvey outlasted Dan Sullivan in 19 holes Wednesday to advance to the U.S. Mid-Amateur final at Stonewall Links.The 38-year-old Harvey, the 2014 winner from Greensboro, North Carolina, will face 25-year-old Stewart Hagestad of Newport Beach, California, in the 36-hole final with a Masters spot at stake.Its pretty exciting, Harvey said. Its what you come here for, and the prize is worth it.Hagestad beat Scott Strickland of Birmingham, Michigan, 4 and 2 in the event for players 25 and older.In June, Harvey beat Hagestad in a playoff in the George C. Thomas Invitational at Los Angeles Country Club.I wouldnt say that anybodys got an advantage, Harvey said. I definitely have the experience, but hes got the young cockiness and is in shape.For the first time in USGA championship history, the stroke-play, co-host course will be used in a 36-hole championship match. The first 18 holes will be played on the par-70 North Course and the afternoon round will be played on the par-70 Old Course, the site off all of the other matches.Harvey finished off the 49-year-old Sullivan with a two-putt par from 30 feet on the 19th -- the 246-yard, par-3 ninth.Its a difficult hole, demanding hole, said Harvey, a member oof the 2015 U.ddddddddddddS. Walker Cup team. You better hit a good shot, and Ive been able to do that so far.Sullivan, from Pasadena, California, overcame a two-hole deficit to force the extra hole, winning the 13th and 16th with birdies. They halved the par-3 17th with pars and the par-4 18th with bogeys.Sixty-seventh in the world amateur ranking, Harvey was the stroke-play medalist for the record fourth time. The property manager is competing in his 21st USGA championship.Hagestad won the 14th with a birdie after hitting to 6 inches to take a 2-up lead and closed out the 34-year-old Strickland with conceded par wins on 15 and 16.I just played a little bit better golf, Hagestad said. I knew that if I could kind of get it to the back nine and trust myself and commit to hitting good shots that hopefully Id be OK.Hagestad graduated from the University of Southern California in 2013, and won the 2016 Met Amateur Championship. He works as a financial analyst.In the morning quarterfinals, Harvey beat David May of Auburn, New York 4 and 3, and Hagestad topped Michael McDermott of Bryn Mawr, Pennsylvania, 2 up. ' ' '