Amir Khan's Defeat to Danny Garcia

Boxing careers at the top level can be built in an instant, or collapse in the blink of an eye. Amir Khan admitted after losing to Danny Garcia that he only has himself to blame after suffering a crushing fourth-round stoppage in Las Vegas.He was put on the canvas three times. It should probably have been stopped at the end of the third round, when Amir Khan was first caught by a thunderous left hook on the neck, rather than having been extended into the fourth period.Yet the house fighter often gets the best opportunity to stay in the fight. Referee Kenny Bayless appeared to allow Khan the best opportunity to recover. In reality, Khan staggered back to his corner at the end of the third round clearly out on his feet. All the signs were there that the Bolton fighter was taking the power of Garcia too lightly. In other words, he arguably failed to respect his opponent enough. Khan was the huge favourite, Garcia a replacement fight for the cancelled contest against Lamont Peterson, who tested positive for a synthetic steroid.This outcome is a huge game-changer for Khan. It puts him back where he was when Breidis Prescott knocked him out in September 2008. He will be accused of being 'overprotected, over-hyped'. Khan remains hugely exciting as a fighter, a man with massive desire and heart and clear brilliance in his athletic abilities. Yet his flaws are clear to see.Khan's stated project of moving up to the welterweight division and fighting Floyd Mayweather Jnr, the widely-regarded No 1 pound for pound fighter on the planet, lies in tatters.There was a carelessness in the exchanges from Khan in the third round against Garcia - a counter puncher with a dangerous left hook, his best weapon - which have consigned him to a long rebuilding process.