<p>               FIle - In this Sept. 15, 2018, file photo, Gennady Golovkin lands a punch against Canelo Alvarez during a middleweight title boxing match, in Las Vegas. Golovkin has been one of his generation's best champions. His two bouts with Canelo Alvarez were classics, and a third could be coming later in 2019 if Triple G takes care of Steve Rolls. (AP Photo/Isaac Brekken, File)             </p>
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