Ward v Kovalev - Undercard results from Las Vegas

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Results from Mandalay Bay Hotel & Casino, Las Vegas, USA: 

Russian up and comer Dmitry Bivol announced himself on the PPV stage with a crushing four round punishment handed to Cedric Agnew.

The undefeated interim WBA light-heavyweight champion showed speed and power in abundance until referee Russell Mora had seen enough.

Bivol, who is just 26 years old, pushes to 11-0 and looks for all the world to be a future star at 175 pounds.

Luis Arias looked impressive on his way to a fifth round stoppage win over Arif Magodedov in the HBO Pay-Per-View opener.

Magomedov hit the canvas following some pressure and referee Robert Byrd called the fight off.

Super middleweight Vaughn Alexander halted Fabiano Pena by retiring him in four rounds. Alexander, brother of ex-world title holder Devon, is now 10-0.

In the featherweight division, Tramaine Williams remained undefeated by stopping the more experienced Christopher Martin in two rounds, whilst Enriko Gogokhia out-pointed Jonathan Steele over six rounds at welterweight.

Also at 147, John Bauza managd to take Brandon Sanudo out in two, whilst middleweight Bakhram Murtazaliev celebrated a first round win over Alex Duarte.

Prior to the main Pay-Per-View portion of the card, Junior Younan knocked out Zoltan Sera in the very first session.

Reamining bouts:

WBA/IBF/WBO Light Heavyweight titles - Andre Ward v Sergey Kovalev

WBA Super Bantamweight title - Guillermo Rigondeaux v Moises Flores