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Sergey Kovalev is one of the most dangerous punchers in boxing. He's stopped 21 of 24 opponents, with one technical draw.
In his last six fights, as his level of competition has gone up, his fights have gotten shorter. Since 2012, nobody has made it out of the fourth round against him. And the sole opponent to make it past three, defending WBO champion Nathan Cleverly, should not have been allowed out of his corner for the fourth.
The boxing public loves nothing so much as a knockout artist, so Kovalev has begun to get noticed. Fellow light heavyweight champion Adonis Stevenson is another puncher with ferocious power, and HBO would no doubt love to get them together in the ring.
Kovalev also looks like one of the biggest available threats for super middleweight champion and pound-for-pound superstar Andre Ward. It's even possible to imagine Kovalev in a future showdown with current middleweight champion and fellow monster puncher Gennady Golovkin.
Challenger Cedric Agnew is also undefeated, but his resume looks nothing like Kovalev's. Where Kovalev spent last year knocking out a world champion, a former world champion and a couple of highly rated contenders, four of Agnew's last six opponents had losing records.
When you look closer, Agnew's recent record is even less impressive. Of the last two fighters he has beaten with winning records, Otis Griffin has gone 1-9 since the start of 2011, and Yusaf Mack has gone 3-5 in his last eight fights.
Still, Agnew had a terrific amateur career, and he's handled whoever was in front of him as a professional. This is the opportunity of a lifetime for Agnew, and I don't expect him to lie down. But compared to the boxers he's seen in the ring to date, Kovalev is an entirely different beast.