Peterson vs Khan Update: Sources Say Peterson Tested Positive For Banned Substance

Earlier this evening, we discussed the rumor that the May 19 rematch between Lamont Peterson and Amir Khan is in jeopardy, with The Sun initially reporting that the fight was "on the brink" of being called off, while Ron Lewis of The Times said the fight was in trouble due to something involving Lamont Peterson.

Initial guess was that an injury suffered in training was to blame, but Gabriel Montoya of Max Boxing says on Twitter that he's been told by "reliable sources" that Peterson has tested positive for a banned substance.

The fighters were being tested by the Voluntary Anti-Doping Association (VADA), which Peterson recently told Montoya he supported.

"Yeah," said Peterson when asked if his camp asked for VADA testing. "It was based on just hearing about these other drugs that you can take that won't show up in your urine. We can take urine tests all day but we take urine tests because of the old steroids. But they have new steroids that won't show up so then, why not take the blood tests and make it mandatory? That is why I am saying as a fighter, we need to pay attention to this and make sure something gets done."

There's nothing concrete as of this time, but Montoya is a very good reporter who doesn't jump to conclusions or report things like this lightly. I hesitate to doubt his sources if he's telling the world about it.

We'll have more if anything comes in this evening, but right now it looks like the boxing schedule is going to take a big hit.