Junior Dos Santos is the top heavyweight in the UFC and what seems like an unstoppable force.

In his next fight, he will face Alistair Overeem, who will give him his biggest test when it comes to striking, as the Dutch kickboxer tries to stop the champion's boxing.

In many ways, he can remind MMA fans of a dominant Wladimir Klitschko. But when he faces Overeem, it might be one of the two that boxing fans have seen through the years.

I believe that Overeem's striking is more complete then Dos Santos' boxing, but that is just a personal opinion.

It very well could end with Dos Santos knocking out the challenger or proving that he has a better ground game than fans expected.

There is also a chance that he will not be able to handle the kicks of Overeem and get beaten that way.

Either way represents a part of Wladimir Klitschko's career. One part of Klitschko's career is one of dominance, but the part before that is one filled with devastating losses that taught him how to be a better fighter.

Now Klitschko is a current champion, but he faced defeat as a title holder to two people: Corrie Sanders and Lamon Brewster.

In the Sanders fight Klitschko just got caught by a powerful puncher. 

In the fight with Brewster he spent too much energy too quickly and got beaten. Dos Santos has to be wary that he doesn't make the same mistake.

Junior Dos Santos was exhausted after battering Roy Nelson for three rounds. When he wasn't able to knock out his opponent, he was unable to conserve his energy....

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