By Lisa Lewis

With title rival Scott Redding in the medical centre, Pol Espargaro rode to race and world championship victory in Sunday's Japanese Moto2 Grand Prix at Motegi.

Redding had been wiped out while trying to avoid a fallen Esteve Rabat on the opening lap of the original red-flagged race.

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The Englishman was left with nowhere to go as Rabat and Alex Mari?elarena both fell in front of the already injured Marc VDS rider, who was then thrown down the road after hitting Rabat's machine.

The Briton had made a heroic effort to even ride after fracturing his left forearm the previous weekend at Phillip Island.

"When Tito went down in front of me I did everything I could to avoid him, but I couldn't avoid hitting the bike and I went down too," said Redding.

"It's disappointing, obviously, not just because of everything we've been through just to race here this weekend but also because there was nobody left to take the fight to Pol with both Tito and me out of the race."

Espargaro's 'Never give up' mantra had served him well over the last few weeks as he saw the title swing dramatically back into his grasp.

Already holding a 16 point advantage over Redding after the events of Australia, and with his main rival out of the picture once again, the Pons rider only needed to finish in the top seven to become champion.

Instead of holding back, the Spaniard put on a performance that insured the Moto2 title was the first 2013 championship to be decided. After overtaking Mika Kallio early in the 15 lap sprint he never faltered, pulling out a gap and leading comfortably over the line.

Reflecting on his achievement after the race an emotional Espargaro was keen to thank those who had helped him stay strong after being behind in the championship for so long:

"I can't explain it with words. I feel like I'm flying!" said Espargaro. "I can't believe what we did. I'll need time to think about it. I want to enjoy it when I get home and now celebrate with the team because it was a title won by a big family. I want to congratulate them because it was a lot of hard work, team work.

"It was a difficult year for sure. The other riders, especially my team-mate [Rabat] and Scott, were so fast all year. Scott was also so consistent and until Australia he never fell. I did some mistakes at the start and then I was catching him and finally we got it.

"It was difficult, but when you have good people around you, you can get what you want."

The close Espargaro brothers got to celebrate together as MotoGP rider Aleix found his way onto the track to give Pol a world championship winning flag and t-shirt. Pol will join Aleix in the premier-class next season, having already signed to ride alongside Bradley Smith at Tech 3 Yamaha.

"This is for sure the best way to move to MotoGP. At the start of the year it was my dream [to be champion] and now it's a reality. We want to enjoy the race in Valencia with our people and after think about MotoGP," said Espargaro.

Redding also has a 2014 MotoGP seat, on a Honda Production Racer at Gresini, and is determined to end his Moto2 career on a high at Valencia.

"The championship's gone and, although it wasn't through want of trying, that doesn't make it any easier to accept. The important thing is to get over it, come back strong and finish the season on a high at Valencia," he said.

The 20-year-old was quick to congratulate Espargaro on his victory: "Congratulations to Pol on winning the title; it was a good battle and I'm just sorry we couldn't take it down to the wire."

Redding can at least take solace from the fact that he did not pick up any further serious injuries in the Motegi accident. The season finale takes place on November 10.