By Ben Dirs BBC Sport at the 02 Arena

Khan took plenty of punishment from Limond in London

Promoter Frank Warren says "people are idiots" if they still think Amir Khan is ready for a world title shot after his victory over Willie Limond.

Khan, in his 13th fight as a pro, was floored by the Scot on his way to claiming the Commonwealth lightweight crown at London's 02 Arena.

"Amir's still got the L plates on," Warren told BBC Sport.

"He's still got a lot to learn. But that fight was better than having four or five fights against ordinary guys."

Khan, 20, said at the start of this year that he would be ready for a world title tilt within 18 months while some commentators had called for him to be moved along quicker.

But Warren said his charge needed to tighten up his technique after shipping plenty of punishment against the experienced Limond, who had lost just once in 27 encounters before Saturday.

"He won't be challenging for a world title in the next five or six fights, that's for sure," said Warren.

I got in trouble for keeping my hands low and my chin up and lunging in with stupid shots Amir Khan

"He got caught by rushing in, chin up in the air and it took him five rounds before he started throwing uppercuts, and that was the shot to catch Limond with.

"Every time he threw one, he really hurt him, and eventually broke his jaw with that shot.

"When Amir picks his shots, which he started doing as the fight went on, you see the best of him.

"But he's got so much confidence in his ability and that's sometimes a danger.

"I like to see fighters tucking up and keeping their chin down. Amir can still look very amateur sometimes.

"But he showed he's got a good chin, a good heart and by the end of round six [when Khan was sent to the canvas] he was back in it.

606: DEBATE Hopefully people won't dismiss him as another wasted talent marknobleisthefuture

"You get careless and you get caught in this game, but the main thing is how you cope. Fighters who haven't got chins don't get up.

Meanwhile, Khan said he learnt more in his bout with Limond than he had in his previous 12 fights and that he still had a lot to work on with trainer Oliver Harrison.

"Because it was a 12-rounder, I couldn't really let myself go too much, but now I know I have got the fitness," said Khan, who now has 10 wins inside the distance.

"I got in trouble for keeping my hands low and my chin up and lunging in with stupid shots, but at least it's happened now and not in the future against a better opponent.

"I had the hunger in me to get knocked down and come back stronger. I've learnt far more from this than if I'd knocked him out in the first round.

"I got over-anxious and tried to knock him out too early and that's when I was getting tagged. I learnt more than I had in my whole pro career.

"He's tough, I caught him with some good shots that most lightweights wouldn't have stood up to.

"It wasn't the best performance, but I'll go and have a look at the tape and see what I did wrong - at least I've got something to work on."