Gennady Golovkin
In a scathing blog post, Alvarez took aim at Sanchez after the veteran coach accused him of "running" during last year's drawn first meeting with Golovkin in Las Vegas.
Talks for a rematch between undefeated middleweight champion Gennady Golovkin and Mexican boxing hero Canelo Alvarez expected to begin in the coming days .
Gennady Golovkin retained his three world titles Saturday, fighting to a draw with Mexican star Canelo Alvarez in a showdown for middleweight supremacy that lived up the hype.