As previously reported on, the highly anticipated rematch between Canelo Alvarez and Gennady Golovkin is in jeopardy after the Nevada Athletic Commission filed a formal complaint against Canelo on Thursday - in connection with the boxer testing positive for clenbuterol in two separate tests that were administered in the month of February.

The rematch, which is now in serious jeopardy of being canceled, is scheduled for May 5th at the T-Mobile Arena in Las Vegas. HBO Pay-Per-View will distribute the contest.

As a first time offender, Canelo faces a ban of one year - but it could get reduced to six months.

Canelo will have to state his case, in person or by telephone, at a NSAC hearing scheduled for April 18 in Las Vegas.

The possibility of Canelo being suspended has prompted MGM Resorts International, which owns and operates the T-Mobile Arena, to start offering full refunds to ticket-holders at the original point of purchase.

Canelo tested positive for the banned substance on February 17 and 20, and his handlers have attributed the positive tests to contaminated meat that was inadvertently ingested during training camp in Mexico - but whether that scenario is true or not, the issue of contaminated meat is a very well known problem in Mexico, and critics feel the boxer and his team did not take the proper precautions to avoid the current dilemma.

Clenbuterol has fat burning properties and athletes have been known to use it to help them drop body fat and weight quickly. Other Mexican boxer, like Erik Morales and Francisco Vargas, have tested positive for the drug in the last few years.

One boxer standing in Canelo's corner, is former five division world champion Floyd Mayweather Jr.

Mayweather, who dominated Canelo over twelve rounds back in 2013, has been a very outspoken advocate for random blood and urine testing in boxing.

He feels the rematch should go forward as scheduled, as long as Canelo is vigorously tested until the fight date. Canelo has passed three separate drug tests conducted in the month of March.

"I'm not here to say anything bad about Triple G, or anything bad about Canelo. I think the fight still should happen. If they put the fight somewhere else [if they don't allow it in Las Vegas]... if he got busted or whatever he did. Say he got busted, from here all the way to the fight - there should be random blood and urine testing and they should fight," Mayweather told