DELRAY BEACH, Fla. -- John Isner held off an upset bid by Dudi Sela of Israel on Thursday night to advance to the quarterfinals of the Delray Beach Open after No. 3 seed Kei Nishikori of Japan exited the tournament because of a left hip injury. The second-seeded Isner squandered four match points in the third set after leading 4-1, but the 6-foot-10 American rallied from a 5-2 deficit to prevail in the tiebreaker for a 3-6, 6-1, 7-6 (5) victory that earned him a spot in the quarterfinals for the third consecutive year. "More times than not, when Im up 4-1, I close it out," said Isner, who is 5-0 in his three-set matches this season but is playing in his first tournament since exiting the Australian Open with an ankle injury last month. "It definitely didnt need to go to 5-5 when I was up 4-1. I put a lot of stress on myself when I do that." The world No. 13 will face American qualifier Rhyne Williams on Friday night. Williams ousted wild-card Marcos Baghdatis of Cyprus 6-7 (7), 6-4, 6-2 in Thursdays nightcap to reach his second ATP quarterfinal. Nishikoris bid to win his second consecutive ATP title came to an abrupt halt Thursday afternoon when the top-ranked Asian was forced to retire during the first set of his second-round match because of a left hip flexor injury. Nishikori was trailing Teymuraz Gabashvili of Russia 4-2 when he decided to stop the match. He said that he experienced discomfort for the first time during his first-round win Tuesday in which he stretched his win-loss record this season to 12-2. "I tried to play, but if youre not 100 per cent, its tough," said Nishikori, who is ranked No. 15 in the world and was coming off a win in Memphis last week. "I couldnt do anything today. Its going to take some time to recover. Its shocking this happened, especially since Ive been playing well." Gabashvili advanced to the quarterfinals on Friday and will face No. 7 seed Marin Cilic of Croatia, who defeated American wild-card Ryan Harrison 6-3, 6-4. Samuel Groth and Max Mirnyi advanced to the doubles semifinals with a 7-6 (5), 6-4 win against Americans Sekou Bangoura and Vahid Mirzadeh. Harrison and fellow American Jack Sock filled out the final spot in the doubles semifinals with a 6-4, 7-5 win against Santiago Gonzalez and Scott Lipsky. Wholesale Atlanta Falcons Jerseys . -- Its been 21 years since Joe Gibbs Racing celebrated its only Daytona 500 victory. Kendall Sheffield Jersey .com) - A pair of programs shooting for their 10th win of the season get together at Madison Square Garden on Saturday, as the NC State Wolfpack tangle with 22nd-ranked West Virginia during the challenge round of the Gotham Classic. http://www.cheapfalconsjerseysauthentic.com/ . Louis Blues are reportedly taking restricted free agent forward Vladimir Sobotka to arbitration. Steve Bartkowski Jersey . 98 jersey in a game yet, and already its a big seller. Atlanta Falcons Jerseys 2018 .com) - Guard Greivis Vasquez and forward Patrick Patterson, two key pieces to the Toronto Raptors run to an Atlantic Division title in 2013-14, were both given qualifying offers by the team on Saturday.LONDON -- Alvaro Negredo and Edin Dzeko scored in extra time to send Manchester City into the League Cup quarterfinals with a 2-0 win at Newcastle on Wednesday, while Tottenham needed a penalty shootout to earn a place in the last eight. Newcastle dominated in the early stages but City weathered the storm and then raised its game in extra time. Negredo broke the deadlock from close range after a simple move in the 99th minute before Dzeko took the ball round goalkeeper Tim Krul to seal the victory in the 105th. In the other fourth-round match, Tottenham and Hull were level at 2-2 after extra time. Hull player Ahmed Elmohamady, who gave away the penalty converted by Roberto Soldado at White Hart Lane in Hulls 1-0 defeat to Tottenham in the Premier League on Sunday, missed the decisive spot-kick. Gylfi Sigurdssons 25-yard (meter) shot in the first half had put the home side ahead, before American goalkeeper Brad Friedel fumbled the ball into his own net. Paul McShane scored in extra time to give Tottenham the lead, but Hull substitute Harry Kane made it 2-2. Tottenham prevailed 8-7 on penalties. "To a man my players were magnificent. They didnt deserve to go out of the Cup but it wasnt our day today. We had the better chances," Hull manager Steve Bruce said. At St Jamess Park, Negredo calmly tapped the ball in to put his team ahead after Dzeko sent in a low cross from the left side of the area that Newcastle defender Mapou Yanga-Mbiwa failed to intercept. David Silva and James Milner combined well to set up the second goal. Milner found Dzeko with a superb pass that the Bosnian striker converted. Dzeko praised City backup goalkeeper Costel Pantilimons performannce after the Romanian player kept the pressure on Citys No.dddddddddddd 1 keeper Joe Hart. "He was great. This is the second game in the Cup that he hasnt conceded a goal, so hes definitely improving," Dzeko said. City coach Manuel Pellegrini made 10 changes to the side that lost to Chelsea at the weekend. His team soon came under pressure and was lucky not to concede when Papiss Cisses clever lob over goalkeeper Pantilimon flew just wide in the eighth minute. Without Vincent Kompany, Citys defence looked shaky and following a free kick and a melee in the box, Newcastle fans erupted in cheers when Ameobi slotted in from close range -- only to see his goal disallowed for offside. City became more dangerous on the break as the game opened up in the second half. James Milner curled a shot over an empty goal in the 63rd minute after Krul had been caught stranded and Negredo found the side-netting after a run into the area. Pantilimon made a decisive save in the 91st minute after Hatem Ben Arfa found Cisse on his own, blocking the strikers poor finish before Negredo and Dzeko turned the match in Citys favour. "Were obviously disappointed not to score. We played well enough to warrant a goal and I couldnt ask more from the players," said Newcastle boss Alan Pardew, who had made a "priority" of the League Cup. "The performance level was really high but it was a hard match so its a shame we didnt get our noses in front." City will next face Leicester while Tottenham will host West Ham in a London derby. Stoke faces Manchester United and Chelsea will play the winner of Sunderland vs. Southampton in the other quarterfinal. 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