KEY BISCAYNE, Fla. Evgeni Nabokov Jersey . -- Novak Djokovic advanced without hitting a ball for the second time at the Sony Open, and now hes in the final. Djokovic received his latest walkover Friday when Kei Nishikori withdrew less than two hours before their semifinal because of a left groin injury. "I tried to warm up and I couldnt move" Nishikori said. "With anybody on the other side, I dont think I could win today." The No. 2-ranked Djokovic also got a walkover in the third round and has played only six sets in the tournament. Hell try for his fourth Key Biscayne title Sunday against the winner of Friday nights match between No. 1 Rafael Nadal and No. 7 Tomas Berdych. No. 1 Serena Williams will try for her seventh Key Biscayne title when she plays No. 2 Li Na on Saturday. Former No. 1 Martina Hingis advanced to her first doubles final since 2007 when she and Sabine Lisicki beat Cara Black and Sania Mirza 6-3, 6-4. Nishikori said his groin has bothered him for more than a month, and he retired during a match in Delray Beach last month. This week he won a won a three-set match against David Ferrer, saving four match points, and then beat Roger Federer in a three-setter Wednesday night. The No. 21-ranked Nishikori said he wont need surgery, but hes unsure how long hell be sidelined and will fly home to Japan to see a doctor. His next scheduled match is in Davis Cup for Japan against the Czech Republic in Toyko on April 4. Nishikori has retired or withdrawn 14 times in his career, including three times in Grand Slam events. He was hoping to reach his first ATP Masters 1000 final. "It was going to be a great challenge for me today," Nishikori said. "Hopefully I can play another time." A Key Biscayne mens semifinal was also cancelled in 2012 when Nadal withdrew because of a knee injury, giving Andy Murray a walkover. Djokovic will try to complete a March sweep Sunday. He won the Indian Wells title two weeks ago, when he beat Federer in the final. Regardless of results the rest of the week, Nadal will remain No. 1 and Djokovic No. 2 next week. Ben Bishop Authentic Jersey . Canada dropped a 24-21 decision to Zimbabwe before bouncing back with a 10-7 win over Spain. All three sides finished with seven points apiece in Pool E to move on to the final eight while the Philippines was last with only three points. Valtteri Filppula Lightning Jersey . "I like the toughness factor in certain situations where last year and two years ago wed get bumped, get hit [and] wouldnt respond," Casey said an hour and a half before facing the league-best Thunder, a team that hadnt yet lost at home. ATLANTA -- Hawks centre Al Horford will have season-ending surgery on Tuesday to repair his torn right pectoral muscle. Horford, the Hawks leading scorer and rebounder, suffered the injury in the first overtime of Thursday nights 127-125 double-overtime win at Cleveland. An examination on Friday in Atlanta revealed the complete tear of the muscle. Horford explored his options before deciding on the surgery. Hawks spokesman Garin Narain on Monday night confirmed plans for the surgery. Horford is averaging 18.6 points and 8.4 rebounds per game in his seventh season. He suffered a similar injury two years ago. He tore his left pectoral muscle early in the 2011-12 season, when he played only 11 regular-season gamess before returning in the playoffs. Tyler Johnson. Narain said Horford would not return for the playoffs this season. The loss of Horford could be difficult to overcome for the Hawks, who are third in the Eastern Conference. The Hawks have split their first two games without Horford, beating Charlotte before losing at Orlando on Sunday. Elton Brand, normally a power forward, has started the last two games at centre but played fewer than 20 minutes in each game. He had only seven points and two rebounds in 14 minutes against Orlando. The playing time of Pero Antic is also likely to increase. Antic , a 6-foot-11 centre from Yugoslavia, is averaging 3.6 points and 2.4 rebounds in a reserve role. ' ' '
