In a genuinely impressive performance, Wladimir Klitschko put Kubrat Pulev down four times and knocked out the Bulgarian contender in the fifth round, retaining his IBF, WBA, and WBO heavyweight titles, plus The RING Magazine heavyweight title.
Klitschko (63-3, 53 KO) had an opponent in front of him who was willing to take chances, but that's about the end of the good things to say about Pulev's performance. Pulev (20-1, 11 KO) was put down twice in the first round, once in the third, and then a final time in the fifth, tellingly after landing his best punch of the a fight, a good right hand that Klitschko simply absorbed and immediately responded to with one more big time shot.
It wasn't easy work, necessarily, but it was dominant work for Klitschko, whose left hook was his biggest weapon, and a punch against which Pulev seemed defenseless and unprepared.
For Klitschko, this is now 17 straight title defenses and 21 straight victories. Pulev takes his place on the pile of victims.