In the 125cc class, the category leader – Marc Márquez – takes on the tenth event of the World Championships at Indy, with a 15 point advantage at the top of the overall standings. Ten days of rest have helped heal the injury to his left shoulder, incurred in the free practice of the Czech Republic, to improve.After visiting Doctor Mir and starting functional rehabilitation at the Sant Cugat CAR, Márquez arrives at the Indianapolis event still off top form but with the intention of returning to fight for the podium and clock up as many points as possible towards the championship.Marc Marquez says: “I feel quite a lot better than one week ago and I’m undergoing rehabilitation at the Sant Cugat CAR and, although I’m still not one hundred percent, I really want to go for it. We will try to have a good weekend and not make any mistakes. The priority will be to see how I feel on the bike and then we’ll see where we end up.”“I’ve always liked the Indianapolis Circuit so we’ll see if we go well with this bike as, with the KTM the feelings were always good. There are a lot of potholes and it will be very important to get a good set up but the team has experience and I know the circuit too so we’ll try to get back onto the podium and clock up points for the Championship.”MotoGP 125cc Preview:The race for the 2010 125cc title took another twist at Brno where Márquez dislocated a shoulder in practice and then bravely rode to seventh, whilst Nico Terol announced his return to action – and the Championship fight – with a win in his first race back from injury.Red Bull Ajo Motorsport rider Márquez saw his title lead cut to 15 points as Pol Espargaró (Tuenti Racing) placed second in the Czech Republic, and the Spaniard will have his sights firmly set on victory at Indianapolis, especially at it is the track where he secured his first ever World Championship win last year.Terol’s win at Brno pulled him back into the contest and the Bancaja Aspar rider looked very strong in his first race back after fracturing vertebrae at Catalunya. The Spaniard placed fourth at Indy last year and will also be aiming to capitalise on Márquez’s reduced physical condition.Bradley Smith is still maintaining contact with the leading group, but the British rider knows he needs a first win of 2010 to ensure his title hopes stay alive – he placed second at Indy last season. Smith is in fourth in the overall standings, 28 points behind team-mate Terol and 31 ahead of fifth-placed Tomoyoshi Koyama (Racing Team Germany).Esteve Rabat (Blusens-STX) and Sandro Cortese (Avant Mitsubishi Ajo) are separated by only three points, and will also fancy their chances of podium finishes at the U.S. circuit.There will be a single wild card entry as American youngster Kris Turner rides an Aprilia machine for Veloce Racing.