Golovkin's promoter says to Chavez Jr: 'Gennady accepts that $1 million bet, sign the contract!'

By Dan Ambrose: Last night, former WBC 160 pound champion Julio Cesar Chavez Jr (48-1-1, 32 KOs) took a shot at WBA middleweight champion Gennady Golovkin (32-0, 29 KOs) on his Twitter account, saying