Will Klitschko Brothers' Refusal to Fight Each Other Prevent Heavyweight Title Unification?

We're one step closer to having a unified heavyweight boxing champion after Wladimir Klitschko defeated Sultan Ibragimov to add the WBO title belt to the IBF title belt he already owned.

And we'll get another step closer if, as expected, Klitschko next fights WBA champion Ruslan Chagaev.

But what about the fourth and final heavyweight title belt, from the WBC? That one is currently owned by Oleg Maskaev, who fights Samuel Peter in two weeks. If a Klitschko-Chagaev fight could be arranged quickly, and the winner of that one takes on the Maskaev-Peter winner, we'd have a unified title.

But it's not that simple, because there's a wild card in all of this: Klitschko's older brother, Vitali. Although Vitali hasn't fought in more than three years, there's talk that he'll make his return to the ring some time this year and take on the Maskaev-Peter winner.

That means we could be looking at Vitali Klitschko owning one heavyweight title belt and Wladimir Klitschko owning the other three. And that would set up a brother vs. brother fight for the unified heavyweight title, a fight that would be the biggest thing heavyweight boxing has seen since Lennox Lewis fought Mike Tyson.

Except that the fight will never happen. Both Klitschko brothers say they'll honor a vow to their mother not to fight each other. That means we boxing fans may be robbed of the fight we all really want to see. Thanks a lot, Mrs. Klitschko.