Jake Roberts who turned 55 a little over two months ago, announced his retirement over the weekend:

Jake Roberts publicly announced his retirement this past Sunday after wrestling for 2CW in Watertown, NY. Roberts, after defeating Zachary Springate with a DDT, took the mic and announced that while he loves pro wrestling, he just couldn't physically do it anymore and this would be his last match.
Obviously, we all know how wrestling retirements go, but everyone backstage at the event seemed to believe it was a legitimate decision from Roberts at the time.
Source: Mike Johnson of PWInsider