Canelo Alvarez and unbeaten middleweight champion Gennady Golovkin have agreed to a rematch bout Sept. 15 in Las Vegas. Oscar De La Hoya, Alvarez’s promoter, tweeted on Wednesday.“I’m happy to inform that we have a fight September 15!!!! #CaneloGGG2” The agreement was struck hours after a noon deadline that Alvarez’s handlers had given Golovkin to … Read more