Sources close to the information have informed us that previously undefeated former middleweight champion Julio Cesar Chavez Jr. has tested positive for marijuana in the wake of his unanimous decision loss to middleweight king Sergio Martinez. According to one source, Chavez Jr.'s post-fight urine sample had "levels of THC consistent with the use of the drug". Although it said that false positives are rare when it comes to the detection of marijuana use, it's unclear at this point if Chavez Jr. will dispute the result. The promoters of both fighters are said to have already been notified.
Most wouldn't consider marijuana to be the type of drug that an athelete would use to enhance their performance. Nevertheless, it's still on the list of banned substances. It's extremely doubtful that it played any role in last Saturday's lopsided unanimous decision victory in favor of Martinez. That being said, it raises serious questions about Chavez Jr.'s dedication to training for the fight, and it certainly didn't help the poor performance he gave inside the ring.
[UPDATE: Top Rank has confirmed what FightHype originally reported. In a prepared statement being sent out, the company responded: "Top Rank is reviewing the situation. Julio Cesar Chavez Jr. will have an opportunity to explain about the situation to the Nevada State Athletic Commission."]