Boxing Record Archive (BoxRec.com) provides "Active" (called "Current" under previous versions of BoxRec, before Version 3 was launched in July 2007) and "All-Time" (called "All" in Version 3) boxer ratings, as calculated daily by its computer. The "Active" ratings include only boxers who have had a bout within the past 365 days, or have a bout scheduled. (After a year of not fighting, a boxer is automatically designated "inactive" by the BoxRec computer. A boxer is also designated "inactive" or "complete" if s/he has announced his/her retirement, even if that boxer may have had a bout within the past 365 days.) Every active boxer in the database is rated--even those with an 0-1 record. The "All-Time" ratings include both "active" and "inactive" (retired) boxers.
Fighters recognized as champions by The Ring are rated at the top of their division, with the top 10 contenders listed below. Championship vacancies can be filled by winning a box-off between The Ring’s number-one and number-two contenders, or, in certain instances, a box-off between our number-one and number-three contenders. The only three occasions when a fighter will lose his championship status are when he retires, moves to another weight division, or is defeated in a championship bout.