Andy Murray kicks off his Miami Open challenge on Saturday, live on Sky Sports. Our coverage begins at 3pm on Sky Sports 3 HD but Murray is not expected to play his match until midnight so make yourself a cup of coffee and settle in for the evening.The British No 1 is playing Denis Istomin who has already completed one upset this week, having eliminated talented teen Borna Coric in the first round as Murray enjoyed a bye. Andy Murray says he is happy to be back in familiar surroundings as he prepares foe the Miami Open Istomin, of Uzbekistan, is the world No 76 and Murray has won both of their previous meetings, although they were both three years ago.A rematch with Federico Delbonis, who eliminated Murray from last weeks Indian Wells, is still on the cards for the third round. On Saturday, Delbonis plays a second-round match against Grigor Dimitrov.Elsewhere, sixth seed Kei Nishikori plays qualifier Pierre-Hugues Herbert and fourth seed Stan Wawrinka meets Andrey Kuznetsov.One to watchIts worth keeping an eye on Rafael Nadal who seems to be slowly approaching the great form that won him 14 Grand Slams. After an impressive Indian Wells campaign was ended by Novak Djokovic in the semi-final, Nadal continues his upward curve against Damir Dzumhur of Bosnia on Saturday. Nadal earned a big win over Nishikori last week Potential upsetNick Kyrgios, the 24th seed, is pitted in a fascinating contest against Marcos Baghdatis. The maverick Australian should have all the tools to squeeze past Baghdatis, but if anyone knows how to throw a vulnerable youngster off his game, it is the veteran from Cyprus. Kyrgios and Baghdatis has never played before, so the 40-year-old might be licking his lips at facing a talented but inconsistent contender. Nick Kyrgios also brings entertainment to the court In case you missed itBritains Kyle Edmund put up a brave effort against Djokovic on Friday night, eventually succumbing in straight sets, but the match will be remembered for something bizarre.With the ball hurtling through the air towards Djokovic, who was due to serve, check out how he chose to catch it… Novak Djokovic treated the Miami Open crowd to a spectacular catch... 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: ATP schedule Tennis on Sky Latest scores Get a NOW TV pass Air Force 1 Blue Store . After dropping their final six games of December, the Wild opened the new calendar year with four consecutive wins. Following a loss to Colorado on Saturday, Minnesota rebounded the following night to blank Nashville 4-0, but then had the tables turned on them Tuesday. 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Nine corners at the Sepang circuit have been renovated ahead of this weekends Malaysian Grand Prix, which organisers promise will provide a new challenge for drivers.Malaysias race dropped to the lower end of the calendar for 2016 after several years as one of the opening rounds. Extensive work has been conducted on the circuit in that extra time -- as well as being resurfaced, the organisers have updated drainage and run-off areas.The most radical changes have been at the final hairpin, Turn 15. The video below shows the work conducted at the corner, which has been raised by one metre to change the racing line and potential increase overtaking opportunities.Turns 2, 3, 4, 5, 6, 9 and 12 have also had their gradients altered. The resurfacing will have taken away a lot of the buumps that were common on the runs down to Turns 1 and 4.dddddddddddd?Speaking of the renovations, FIA race director Charlie Whiting said: The entire track surface and the fast lane of the pits have been resurfaced to very high standards. In a number of locations the levels of the track have been re-profiled to make the corners flow better or to improve drainage.This is high quality work. The works carried out to the circuit appeared excellent. The general condition of the installations was first class.Circuit CEO Razlan Razali said it will be as if [drivers] have come to Sepang circuit for the first time because the changes have been so significant.? ' ' '