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A bout that was a thriller first time round.
The co-main event of the evening also has championship implications as Canadian Brandon Cook challenges Jaime Munguia for the WBA Jr middleweight title.
But former heavyweight champion David Haye doesn't believe the fight should be happening at all because in his view, Canelo should have been banned for much longer.
Alvarez and Golovkin get another chance to settle what they couldn't last September when they meet in a rematch of their first fight, which ended in a draw.
This Saturday is the night boxing fans have been waiting for!
Only a freak scorecard from judge Adalaide Byrd, who triggered uproar after ruling it 118-110 Alvarez, denied Golovkin a victory.
Scores of 114-114 and 115-113 in Golovkin's favour appeared to fairly reflect the narrow margin between the two men - but ringside judge Adelaide Byrd's freaky scorecard, ruling in favour of Canelo by 118-110, left many observers baffled.
It meant the bout would be ruled as a split-draw, with neither fighter considered to have done enough to secure a unanimous verdict. The rematch is sold out, but a lackluster promotion might make it more hard to sell as many pay-per-views as the two fighters did when they first met.
Anticipated to be one of the biggest fights of the year, the encounter has taken on added spice with Golovkin accusing Canelo of disrespecting boxing fans after his two failed drugs test scuppered original plans for a rematch in May earlier this year.
A positive test by Alvarez for clenbuterol forced the rematch to be postponed from May.
Not wanting to risk a period of inactivity, he remained determined to fight on May 5th, taking on former world title challenger Vanes Martirosyan in a hastily-arranged clash at the StubHub Center in Los Angeles.
Golovkin, (38-0-1, 34 knockouts), is chasing a record-breaking 21st consecutive defence of his middleweight crown when he faces Alvarez again on Saturday, September 15. Even so, Canelo told TMZ that his aim is to put Gennady Golovkin on the canvas within the first round of action: "Without a doubt, I'll be going in there to knock him out, that's what I've worked for", he conveyed through a translator.
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