Dmitry Bivol vs Samuel Clarkson. Full fight

Dmitry Bivol (10-0, 8 KOs), 26, of Russia, retained his interim light heavyweight world title for the second time as he ran over Samuel Clarkson (19-4, 12 KOs), 26, of Cedar Hill, Texas, in a fourth-round knockout victory. It was a surprisingly one-sided main event on Showtime's "ShoBox: The New Generation" card before, 2,159 at the MGM National Harbor in the Washington suburbs.

Bivol had a huge first round, scoring two knockdowns and nearly stopping Clarkson, who was hurt almost immediately. Bivol set him up with hard right hands to the body and then landed a clean left hook to the temple that dropped him. Bivol took his time and landed several hard punches before connecting with a body shot followed by a right hand to the head that dropped Clarkson for the second time in the round. He barely made it to the bell.

In the fourth round, Bivol finally put Clarkson away, dropping him again, this time with a hard left-right combination to the head, and referee Harvey Dock waved off the fight at 1 minute, 40 seconds.