Canelo Alvarez, who is among the three best boxers in the world, will step up for a fresh challenge this weekend when he attempts to win a championship in a higher division.

The 35-year-old Golovkin, making his Las Vegas debut, kept hold of the World Boxing Council, World Boxing Association and International Boxing Federation belts in front of a crowd of 22,358 at the T-Mobile Arena.

Gennady Golovkin says defending his world titles against Canelo Alvarez in his first fight in Las Vegas may be the most difficult bout of his career.

Undefeated middleweight world champion, Gennady Golovkin, has dismissed the high-profile crossover bout between American boxer Floyd Mayweather and Irish mixed martial arts champion Conor McGregor, as a “circus show”.

Gennady Golovkin earned a unanimous decision over Daniel Jacobs on Saturday to retain his middleweight belts but not before boxing's knockout king was taken the distance for the first time.

Floyd Mayweather has called for Gennady Golovkin to step up in weight.