Canelo Alvarez vs Gennady Golokvin Rematch: Live updates from Las Vegas

It's a rematch: Gennady Golovkin and Canelo Alvarez set to fight Sept. 15 in Las Vegas

Canelo Alvarez and unbeaten middleweight champion Gennady Golovkin have agreed to a rematch bout Sept. 15 in Las Vegas.

The agreement was struck hours after a deadline that Alvarez’s handlers had given Golovkin to accept their offer of 42.5% of the fight’s purse. Golovkin originally asked for half, then demanded 45%, but in the end settled for a little less than he wanted — and a little more than Alvarez wanted to give.

If it weren’t already apparent by his 23-fight knockout streak and his record-tying run of middleweight-title victories, there’s a cold hardness to Gennady Golovkin’s mannerisms.

Watch the Golden Boy Promotions preview of the middleweight championship rematch between Gennady Golovkin and Canelo Alvarez.