Wheeler says it happened after he refused to give a urine sample.

If his urine sample doesn't come back dirty, yeah, he's a champion. But it did, ... You can't cheat and get caught. Now we will see how it looks when he fights Guinn. I don't care (about fighting him). Don't matter to me.

Plus, there was very little physical evidence of what happened.

Sun's urine sample taken after the Beijing International Marathon returned negative results, so she can keep her title for the marathon race.

It was sufficient to charge Page with two second-degree felonies punishable by up to 30 years in prison.

It is that phone message that may come back to bite him.