Rafael Nadal has been knocked out of the Miami Open, after being forced to retire from his second round match against little-known Bosnian Damir Dzumhur. After slipping 3-0 behind in the deciding set, Nadal required medical treatment before deciding to call it a day after 109 minutes on court.The Spaniard said he started feeling dizzy towards the end of the first set and later withdrew claiming he was too scared to continue. However, the No 5 seed appeared to be cruising during the early stages of the contest as he raced through the opening set, which he took 6-2 in just 44 minutes.Dzumhur, who was broken twice during the set, did not help his own cause by sending down five double faults while the 29-year-old from Mallorca conceded just five points from his four service games.But everything was to change dramatically after that, with Nadal losing his serve twice during the second set which his 23-year-old opponent claimed 6-4 in temperatures close to 90 degrees.And after Nadal had suffered two more breaks early in the decider, and slipped 15-30 down in game four, the 14-time Grand Slam champion disconsolately shook hands with the delighted Dzumhur. Nadal walks off court after retiring against Damir Dzumhur It had been 443 matches and six years since Nadal last retired on the ATP Tour, when he was beaten in the quarter-finals of the Australian Open by Andy Murray.Nadal admitted: Everything was fine until the end of the first set and I started to feel not very good. It was getting worse and worse and worse.I get a little bit scared to be too dizzy and to lose fluids. I called the doctor a couple of times. I decided I was not safe. I wanted to finish the match but I decided I would not.Hopefully its nothing. Hopefully its just the extreme conditions out there, the beginning of a virus combined with the conditions.Nadal, a four-time Miami finalist but never a champion, lost 22 of the last 29 points on the Stadium Court.Watch the Miami Open live on Sky Sports 3 - your home of tennis.By purchasing a Sky Sports Day Pass for £6.99 or Sky Sports Week Pass for £10.99, you can enjoy access to all seven Sky Sports channels and watch on a TV with a NOW TV Box or on a range of devices. Also See: Watson battles on in Miami Djokovic beats Britains Edmund Anthony Beauvillier Jersey . In their first meeting for six years, the Frenchmen dropped serve twice in the first set, but Giquel broke Simon two more times in the second. Gicquel moves on to face sixth-seeded Jarkko Nieminen of Finland, who advanced with a 7-6 (5), 7-6 (5) win against wild card Pierre-Hugues Herbert, despite the Frenchmans 23 aces. Matt Martin Jersey . Therrien would not confirm his lineup for the game, but he did have the same line combinations practicing together for the third straight day which is usually a pretty good indication of what the lineup will be. http://www.authenticnyislanderspro.com/B...landers-jersey/. -- Washingtons Bradley Beal seemed to make every shot he took in setting a career high with 37 points. Clark Gillies Jersey . Wearing bib No. 1, Maze skied through the gates cleanly to defend her big first-run lead and finish 0.07 seconds ahead of Anna Fenninger of Austria. Defending champion Viktoria Rebensburg of Germany was third, trailing 0. Valtteri Filppula Jersey . JOHNS, N.A new era will begin today for Toronto FC as they open the 2014 preseason against DC United in Bradenton, Florida. Midfielder Michael Bradley, one of the teams new designated players, will make his debut, while striker Gilberto could see his first action for TFC in the contest. Bradley, a key member of the US mens national soccer team, is expected to bring stability to the Toronto FC midfield. The 26-year-old was acquired from Serie A side Roma in January for a reported $10 million transfer fee and reportedly will collect a $7.1 million salary. The New Jersey native played every minute of the 2010 World Cup for the United States. Gilberto, a 24-year-old Portuguese forward who is considered a pure goal scorer, was signed by the club in December. &nbssp; The third, and arguably biggest, designated player acquisition of the off-season, Jermain Defoe will not be available for the preseason opener as he remains on loan with Barclays Premier League side Tottenham until the end of February.dddddddddddd. In his second tour with Toronto FC, Canadian international player Dwayne De Rosario could also see his first action since rejoining the club in the off-season. De Rosario was reacquired by the team during the MLS re-entry draft and then signed to a new contract. The opposition for the preseason opener will be De Rosarios former club DC United, who, like Toronto FC, are looking to bounce back from a tough season. DC United finished with a 3-24-7 record last season and a league low 16 points. Toronto FC ended the season 6-17-11 in 2013, ninth in the Eastern Conference. 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