This is a list of undisputed champions in professional boxing. The judging system is similar to professional boxing. The league is organised with the support of WBC and Professional Boxing Organisation India. Lyle had a very late start in professional boxing. Callahan retired from professional boxing around 1932. Spong decided to begin a career in professional boxing at age 29. Claude Noel is a former world champion in professional boxing. There are now four major sanctioning bodies in professional boxing. Moorer had a fast rise through the professional boxing ranks. He had a sum total of three professional boxing matches. This has been his sole venture into the sport of professional boxing so far. Argentina has been the home of world champions in professional boxing. Quintana announced his retirement from professional boxing after the loss. The hotel has a history as a prominent professional boxing venue. The weight limit at light flyweight in professional boxing is 108 pounds (49 kilograms).