Shane Carwin officially acknowledged his retirement today via his twitter account. The Heavyweight slugger maintained his day job as an engineer throughout his tenure with the UFC.

Shane opened his career with 12 straight victories before being submitted by Brock Lesnar during the second round of his title unification bout at UFC 116. Carwin took some time off to heal his back and change his diet, returning to the octagon 11 months later to face future UFC Heavyweight champion, Junior Dos Santos, in a 3 round slobberknocker. After 15 minutes of fighting, Dos Santos was awarded the unanimous decision. Carwin was supposed to cap off the 16th season of The Ultimate Fighter in a coaches’ bout with Roy Nelson. However, he was forced out of the fight with a knee injury in November of 2012. 6 months later, Shane called it a career on May 7th, 2013.

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