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Can anyone stop Marc Marquez speeding to a third successive MotoGP title in 2015? Mirco Lazzari gp/Getty Images
A former world champion, 27-year-old Spaniard Jorge Lorenzo is expected to be Marquez's closest rival this year. Movistar Yamaha
Marc Marquez became the youngest MotoGP world champion in 2013 winning the world's premier motorcycle racing series when he was just 20 years old. HRC
Aleix Espargaro got Suzuki off to a great start in their MotoGP comeback -- the Spaniard finished third fastest in the first practice at Losail. MotoGP.com
Andrea Iannone is a new racer for Ducati and reportedly likes racing at night -- Qatar's MotoGP will be held in the evening due to scorching daytime temperatures. Ducati Corse
Ducati Team Principal Gigi Dall'Igna (center), led the team's turnaround with the help of Open Class benefits -- allowing teams more choice of fuel, engines and tires. Ducati Corse
Britain's Cal Crutchlow could challenge the podium places having moved from Tech3 Yamaha to Ducati and on to LCR Honda in as many seasons.
MotoGP.com
MotoGP.com
Italian Livio Suppo -- a former Ducati team boss -- now works with MotoGP favorite Marquez in his role as Honda team principal. HRC
Multiple MotoGP world champion Valentino Rossi could also be a contender, although he's struggled in preseason testing. Movistar Yamaha
