Saul ‘Canelo’ Alvarez, Gennady ‘GGG’ Golovkin to fight in September

The surprise announcement was made immediately after Alvarez (49-1-1, 34 KOs) comfortably beat Julio Cesar Chavez , Jr. 120-108 on all three scorecards at the T-Mobile Arena.

The fight will take place on September 16 but the location has yet to be confirmed.

"Tonight, I showed I could move, I could box, I showed as a fighter I can do all things," Canelo said after the bout.

“GGG, you are next, my friend. The fight is done. I've never feared anyone, since I was 16, fighting as a professional.

“When I was born, fear was gone. I never got my share of fear. I always say, Canelo Alvarez is the best because I fight the best."

Golovkin’s WBA, WBC and IBF belts will be on the line against the 26-year-old Mexican.

"I feel very excited. In September, it will be a different style - a big drama show," said Golovkin.

"I'm ready. Tonight, first congrats to Canelo and his team. Right now, I think everyone is excited for September. Canelo looked very good tonight, and 100 percent he is the biggest challenge of my career."

Golovkin (37-0, 33 KOs) won his last fight - a unification bout with Daniel Jacobs - narrowly on points.