UFC middleweight fighter Jason MacDonald is hanging up the four-ounce gloves and retiring from mixed martial arts. MacDonald leaves the sport with a MMA record of 25-16 and a UFC mark of 6-8. In his most recent bout, MacDonald was knocked out by Tom Lawlor just 50 seconds into his fight lasty May. MacDonald will”¦The post Jason MacDonald Walks Away From Fighting appeared first on Fighters.com.