Following his first round knockout loss to “King Mo” Lawal Wednesday night at Bellator 96, UFC vet Seth “The Silverback” Petruzelli has decided to close the book on his 13 year long fighting career.

The 33 year-old fighter, who was coming off a stoppage loss  to Jacob Noe before facing Lawal, released the following statement via Twitter:

I want to thank my family, friends, fiancé 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.

Petruzelli competed for numerous organizations during his career, including the WEC, King of the Cage and the UFC. The noted striker also participated in the second season of “The Ultimate Fighter” at heavyweight, but Petruzelli was eliminated by Brad Imes.

Petruzelli’s biggest win, in terms of viewers, took place in 2008 when he knocked out “Kimbo Slice” in 14 seconds while fighting live on CBS for EliteXC. That bout sent a massive shockwave throughout the MMA world, as at the time, Slice was undefeated and was one of the sport’s biggest names. Oh, EliteXC held one more event after that.

“The Silverback” retires having gone 14-8. Petruzelli’s last win took place in August, when he stopped fellow UFC vet Ricco Rodriguez at Bellator 48.