UFC on FUEL TV 4 results: Aaron Simpson wins decision over Kenny Robertson

UFC on FUEL TV 4: "Munoz vs. Weidman," taking place tonight (Wed., July 11, 2012) at the HP Pavilion in San Jose, California, featured a welterweight scrap pitting Aaron Simpson against late replacement Kenny Robertson.

Originally, Simpson was to make his 170-pound debut against perennial contender Jon Fitch. However, Fitch suffered an injury and was forced to pull out, which seemed like a blessing in disguise when Robertson was forced to step up on short notice.

Sure enough, it was.

Simpson used a suffocating wrestling game to grind Robertson down through 15 minutes to win a unanimous decision. It wasn't pretty but it got the job done and gives "A-Train" his first victory at 170-pounds inside the Octagon. That'll do.

Both men came out showing little respect for the other's power, standing right in the pocket and trading punches. It didn't take long, however, for Simpson to abandon the stand up in favor of his real strength, his wrestling.

So he took Robertson down once, then after he got up, grabbed him and slammed him down for another takedown.

That ended round one and 170-pounds didn't seem so bad at all.

The second round saw more of the same, not surprisingly. Simpson could tell he had a big advantage in grappling, so he went back to work with it. Robertson attempted to get cute a few times, throwing multiple spinning back fists, but he missed every time and found himself in bad positions because of it.

And so the second stanza came and went and it was clear Robertson needed a finish and a finish alone in the final frame to win this fight.

He didn't get it.

The third round saw Simpson continue to dominate with his wrestling and while he didn't get the finish, at least he didn't take his foot off the gas pedal on the way to the final horn.

Welcome to welterweight, old man.

Remember, too, to check out MMAmania.com's live ongoing coverage of the UFC on FUEL TV 4 main card by clicking here.