LOS ANGELES (AP) — The Canelo-Triple G rematch, expected to be the fight of the year, is off.

Canelo Alvarez has withdrawn from next month's middleweight title bout with Gennady Golovkin, two months after Alvarez twice tested positive for a banned substance.

"I have always been a clean fighter and I always will be a clean fighter," Alvarez said Tuesday during a conference call. "I want to prove without a doubt that I have never intentionally ingested clenbuterol. I have nothing to hide and I want to be open and transparent through this process. . I have never taken illegal substances and this is no different."

The May 5 fight in Las Vegas was to have been a rematch of the draw they fought last September. But on March 5, Alvarez's promoters, Golden Boy Promotions, announced he twice tested positive for the steroid in February. They blamed contaminated meat, and Alvarez agreed to random drug testing.

It was unlikely the Nevada State Athletic Commission would approve the fight after it temporarily suspended Alvarez, who could face a longer suspension.

Alvarez is to appear before the commission April 18 concerning the positive tests. Golden Boy President Eric Gomez said Tuesday the promoters were advised Alvarez likely would not be cleared to fight May 5.

"I've never let you down," Alvarez said to his fans. "I've never let you down and I never will. I respect what I do."

Golovkin is hoping to fight a different opponent at T-Mobile Arena on May 5, but it won't approach the huge event that the rematch with Alvarez would have been.

"I am looking forward to returning to Las Vegas for my 20th title defense and headlining my first Cinco De Mayo event on May 5," Golovkin said in a statement. "It is time for less drama and more fighting."

It's possible Golovkin and Alvarez could meet later this year, depending on any sanctions placed on the Mexican fighter.

Golovkin, of Kazakhstan, publicly doubted that tainted meat caused Alvarez's positive test.

"Again with Mexican meat? Come on," Golovkin said in March. "I told you, it's not Mexican meat. This is Canelo. This is his team. This is his promotion. ... Canelo is cheating. They're using these drugs, and everybody is just trying to pretend it's not happening."

The first bout was a memorable one. They traded big shots for 12 rounds, both believing they had won. The judging on one card, however, was strange.

A 118-110 margin favored Alvarez by Adalaide Byrd; she had him winning all but two rounds. Another card favored Golovkin 115-113 while the third had it 114-114. The Associated Press also scored it 114-114.

Such a close fight screamed for a rematch. And the May fight — on Cinco de Mayo, no less — has been highly anticipated.

Now it must wait.

Meanwhile, Golovkin's promoters will search for a new opponent for the Kazakh, who owns the WBA, WBC, IBF and IBO crowns.

Mike Tyson to face Roy Jones Jr. in Sept. 12 exhibition match

Former undisputed heavyweight champion Mike Tyson is making a comeback.

Tyson, 54, will fight Roy Jones Jr. in an eight-round exhibition on Sept. 12 at Dignity Health Sports Park in Carson, California. The bout will be broadcast on pay-per-view as well as multimedia platform Triller. According to a news release, Triller will also show a 10-part docuseries leading up to the bout.

Tyson (50-6) has caused a stir on social media the past few months as he posted footage of himself training. He last fought 15 years ago, when Kevin McBride stopped Tyson six rounds.

Tyson, in an appearance on ESPN's First Take on Thursday, explained his rea$oning for a return to the ring.

"It's because I can do it. And I believe other people believe they can do it too," Tyson said. "Just because we are 54, it doesn't mean that we have to start a new career and our lives are totally over. Not when you feel as beautiful as I do, and I'm sure that other people feel the same way.

"I never took that many punches. After the last fight I had, I left and I lived my life, and I've been through some experiences, and now I'm back here. I feel like I took better care of my body and my state of mind than most of the fighters before me that retired and came back."

Jones (66-9), at his apex, was considered the most brilliant boxer in the sport, winning titles at middleweight, super middleweight, light heavyweight, and heavyweight. He was a sublime mix of speed, technique and ring intelligence.

Last month, Jones, 51, expressed interest in a possible bout with Tyson.

"I've been trying to enjoy retirement, but people don't seem to want to let me retire," Jones said. "They keep calling me, telling me that Mike wants to come back, and that you'd be a great opponent for Mike.

"We always wanted to see it, but I would've preferred it back then. Tyson is a hell of a specimen still. Still a problem to deal with. But at the same time, life is life, you only live once. You want to know what it's like, you go in there and see. You still gotta see it."

"Iron Mike" was considered one of the most ferocious fighters in the world. He became the youngest heavyweight champion in history (at 20 years and four months) by stopping Trevor Berbick in two rounds in November 1986.

Tyson then ruled the division with impunity, making nine successful defenses and unifying the division before being upset by Buster Douglas in February 1990.

After spending three years in jail for a rape conviction, Tyson returned to boxing in 1995, then won the WBC and WBA heavyweight titles in 1996. Tyson's last true big fight came in the summer of 2002, when he was halted in eight rounds by Lennox Lewis.

As for Jones, his career declined after he was knocked out by Antonio Tarver in 2004. That began a three-bout losing streak, and a fighter who was once considered untouchable became more and more susceptible to getting knocked out.

Jones last appeared in a professional bout in February 2018, when he defeated Scott Sigmon by decision. The last recognizable name on his ledger, Enzo Maccarinelli, knocked out Jones in four rounds in Moscow in 2015.

Tyson didn't seem too concerned when asked about the risk he and Jones face fighting at their respective ages.

"We're both accomplished fighters, we know how to take care of ourselves," he said. "It's an eight-round exhibition. And, listen, we'll be all right. Trust me, we can take care of ourselves."

In an interview with Yahoo Sports, Andy Foster, the executive director of the California State Athletic Commission, said that he believed there wouldn't be headgear, but that the boxers would use 12-ounce gloves.