Canelo says Golovkin must fight him at 155lb catch-weight

(Credit: Hogan Photos) By Dan Ambrose: If IBF/IBO/WBA middleweight champion Gennady "GGG" Golovkin (34-0, 31 KOs) wants to face Mexican star Saul "Canelo" Alvarez (45-1-1, 32 KOs) in 2016 or later,