Shane Carwin officially comes out of retirement

Former UFC heavyweight champion Shane Carwin has been teasing a return to MMA for quite some time now.

Numerous Tweets from Carwin had the MMA community playing matchmaker as they [began putting together potential fights…

Fans even went as far as to call for a rematch with former UFC heavyweight champion Brock Lesnar, who recently made his highly anticipated UFC return in July at UFC 200. Unfortunately, Lesnar failed a pre-fight drug test in addition to a fight night drug test, likely sidelining him for quite some time.