TOKYO -- Frank Dancevic wanted to give it his all in Canadas do-or-die singles match against Japans Kei Nishikori at the Davis Cup on Sunday. But unfortunately for the Niagara Falls, Ont., native, a pulled muscle wouldnt allow him to go past the second set. Japan sealed its victory over Canada in the first-round Davis Cup tie after Nishikori downed an ailing Dancevic 6-2, 1-0. Later Sunday, Peter Polansky of Thornhill, Ont., lost to Go Soeda in the fifth match 6-1, 6-4 to increase Japans margin to 4-1. "Kei came out playing really well today and once I pulled a stomach muscle early in the second set there was no way I could stay with him when I could only serve at 20 per cent..." Dancevic said. "Under other circumstances I probably wouldnt have even stepped on the court with the way I was feeling, but this is Davis Cup and I wanted to give it all I had and push to the limit because this situation means a lot to me." Dancevic, ranked 119th in mens singles, held his serve during the first game, but World No. 18 Nishikori went on to break twice and win the next five games to eventually take the set. After being broken to start the second set, Dancevic took a medical timeout and was forced to retire, handing the match and the tie to Japan. Canada will play a World Group playoff in September in hopes of keeping its spot in the upper echelon of the competition. Japan, meanwhile, will face the winner of a tie between the Czech Republic and the Netherlands in the Davis Cup quarter-finals. The Canadian squad was missing its top two singles players at the tournament as both No. 11 Milos Raonic of Thornhill, Ont., and No. 25 Vasek Pospisil of Vancouver were unable to recover from injuries in time to play. Polansky, who lost Canadas first singles match to Nishikori on Friday, replaced Raonic. Dancevic stepped in for Pospisil in the doubles match with Daniel Nestor on Saturday. The Canadian duo, who hadnt played together in three years, lost to Nishikori and Yasutaka Uchiyama 6-3, 7-6 (3), 4-6, 6-4. "We just battled with so many things this week and nothing really went our way when it came to injuries," said Canadian team captain Martin Laurendeau. "Its obviously disappointing but you cant blame these guys. They gave their all. "... Frank and Peter stepped in and left everything on the court every time they went out there. With what we accomplished last year (reaching the semifinal) we didnt want to take a step back like this but hopefully everyone gets healthy and has a strong season and we can fight hard to keep our spot in September." DreMont Jones Jersey .com) - The Miami Heat will try to close out the Charlotte Bobcats Monday night in Game 4 of their Eastern Conference first round series. 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Joe Flacco Jersey .com) - Oklahoma quarterback Trevor Knight was carted off the field in the fourth quarter of 16th-ranked Sooners 48-14 loss to No.CHARLOTTE, N.C. -- Katerine Savard of Pont-Rouge, Que., won the gold medal Friday in the womens 100-metre butterfly and Canada added silver in both relays to open the fifth stop on the U.S. Grand Prix circuit in swimming. Savard, tuning up for the Commonwealth Games and Pan Pacific Championships this summer, clocked 58.60 seconds with Claire Donahue of the United States second in 58.84 and Kristel Vourna of Greece third at 59.74. In the mens 4x100-metre freestyle relay, Canadas male junior relay initiative tour team took the silver and bronze in its competitive debut. The silver medal winning team was comprised of Mitchel Ferraro of Uxbridge, Ont., Javier Acevedo of Ajax, Ont., Calgarys Yuri Kisil and Victorias Stefan Milosevic. They clocked 3:24.09 The third place squad members were Gael Chaubet of Longueuil, Que., Torontos Oliver Straszynski, Matthew Ackman of Pointe-Claire, Que., and Vancouvers Jonathan Brown in 3:29.24. The other four members of Male Junior Relay Initiative Toour team were fourth in 3:29.dddddddddddd2 with Gavin Dyke of St. Johns, N.L., Vancouvers Justin Chan, Montreals Mirando Jarry and Vancouvers Marshal Parker. SwimMac from North Carolina took the gold in 3:23.92. A junior male relay take-off camp was held last month as part of a strategy to develop the next generation of Canadian mens freestyle relay teams. The NFL-style combined camp focused on developing 4x100-metre and 4x200-metre freestyle relays and the swimmers executed anaerobic and endurance test sets as well as work on relay takeovers, strength and conditioning. In the womens 4x100 freestyle relay, SwimMac won again in 3:44.60 with Swim Ontario second in 3:53.74 with Kennedy Goss of Toronto, Kylie Masse of Windsor, Keira Brazeau of Brockville and Annika Grewal of Oakville. Ackman was also in two individual finals. He placed fourth in the 100-metre breaststroke in 1:02.89 just 0.17 seconds from a podium spot. He was also eighth in the 50-metre breaststroke. ' ' '