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 Cheap Dodgers Jerseys . Robredo, ranked No. 16, bounced back from an upset loss to Leonardo Mayer in the second round of the Royal Guard Open in Chile last week to down Carreno Busta in 1 hour, 25 minutes. On a day filled mostly with qualifying matches, fifth-seeded Marcel Granollers of Spain also entered the second with a 7-5, 3-6, 6-2 win over Aljaz Bedene of Slovenia, while Guido Pella of Argentina defeated Guillermo Garcia-Lopez of Spain 7-6 (6), 6-4 to advance. Hyun-jin Ryu Jersey . Thousands of fans at Mosaic Stadium will be cozying up to each other in an effort to stay warm in chilly temperatures and block the Prairie wind that locals say can knock your socks off. https://www.cheapdodgersonline.com/ .B. -- The Baie-Comeau Drakkar took over sole possession of first place atop the Quebec Major Junior Hockey League on Thursday with their sixth straight win. Wholesale Dodgers Jerseys . -- The Magic have their first victory of the new year. Steve Howe Dodgers Jersey . MORITZ, Switzerland -- Fog prevented downhill racers from getting their Olympic dress rehearsal. Check out the full NFL schedule for Week 8, with game times and networks for the entire slate. All times are ET.More Week 8 coverage:NFL Nation: Score predictions for each Week 8 matchupInsider: Answering Week 8s biggest fantasy questionsAdam Scheftter: How Dallas almost missed out on Dak .dddddddddddd.. over and overCowboys: He was a nobody: Inside Tony Romos rise ' ' '