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UFC and Bellator veteran Seth Petruzelli retires from MMA after knockout loss to 'King' Mo Lawal

It wasn't a hall-of-fame career, but it was certainly filled with some unforgettable moments. Just ask Kimbo Slice.

Former Ultimate Fighting Championship (UFC) light heavyweight Seth Petruzelli, who rose to fame on The Ultimate Fighter (TUF) Season 2, has tied a ribbon around his mixed martial arts (MMA) career following a knockout loss to Muhammed Lawal last Wednesday night (June 19, 2013) at Bellator 96.

"The Silverback" announced his retirement via Facebook:

"I want to thank my family, friends, fiancée and fans for being by my side these past 13 years plus of my MMA career. Every time I fought it was to please and excite you but most of all make you proud of me. Up until a couple years ago it pleased and excited me as well. That is where I went wrong, for the past couple years I have been fighting for the wrong reasons, I don't have the desire or drive to fight like I used to and the past couple fights have shown it. So at this point in my life I would like to officially announce my retirement from the sport of MMA. Competing has been a part of my life since I was 6 years old, now I would like to put more of an effort into seeing my students/fighters do the same and making my gym grow and flourish. MMA has taken me around the world, let me meet the best and worst of people and made me feel like the brightest star but also like a black hole at times ... and I have no regrets because I did it all my way."

That marks the second UFC veteran-turned Bellator fighter to bow out this week ("Babalu" Sobral was the first).

Petruzelli (14-8) fell to Brad Imes in the TUF 2 semifinals, but was called back for a second look against TUF 3 standout Matt Hamill. Unfortunately, he was unable to nail "The Hammer," and found himself back on the regional circuit following a submission loss to Wilson Gouveia at UFC "Fight Night 9."

Then came the biggest night of his MMA career.

"The Silverback" was a last-minute replacement for the injured Ken Shamrock, who was forced out of his Kimbo Slice fight on CBS after an errant cut left him unfit to compete. Petruzelli proceeded to shock the world by toppling the EliteXC headliner in the first round.

The promotion closed its doors not long after.

His notoriety earned him a second stint inside the Octagon, but it ended as dreadfully as his first. The Ft. Myers native was finished in back-to-back fights against Ricardo Romero (UFC 116) and Karlos Vemola (UFC 122), before ending up in Bellator MMA.

Following a 1-2 run, including this week's loss to "King Mo" (see it here), he's calling it quits.

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