Sergey Kovalev stops Blake Caparello

ATLANTIC CITY, N.J. (AP) — Sergey Kovalev successfully defended his WBO light-heavyweight title Saturday night, stopping Australian challenger Blake Caparello in the second round at Revel Casino-Hotel.

Kovalev, the 31-year-old Russian based in Fort Lauderdale, Florida, improved to 25-0-1 with 13th straight knockout and 23rd overall. He had two knockdowns in the second round and was administering more punishment when referee Sparkle Lee stepped in and halted the scheduled 12-round bout at 1:47.

With the victory, Kovalev moved into position for a unification fight against IBF/WBA light-heavyweight champion Bernard Hopkins. The fight will be held in November at either Atlantic City's Boardwalk Hall or the Barclay's Center in Brooklyn.

Caparello dropped to 19-1-1.