Weight class (boxing) names of the new divisions are not standardized between different sanctioning bodies, although the cutoff weights are. These weights are specified in pounds, reflecting the historic dominance of Britain (and, later, America) in the sport. A nonstandard weight limit is called a "catchweight". A catchweight may be agreed to for an individual bout—sometimes even for a championship bout—but championships are awarded only at the standard weight classes. For example, when Manny Pacquiao fought Antonio Margarito at a catch-weight of 150 pounds, the World Boxing Council sanctioned this as a title fight for jr. middleweight, whose limit is 154 pounds. This
Undisputed champion most wins in WBO Heavyweight title fights with 8. By 2001, the WBA was giving the same recognition to WBO champions as to WBA, WBC and IBF champions. In 2004, the WBC began naming WBO champions on its ranking listings. The IBF did not recognise the WBO in May 2006, but was doing so by February 2007. Conversely, the WBO explicitly recognises the other three sanctioning bodies. Some sources consider the WBO title necessary for an undisputed champion. Others continue to consider it sufficient to hold the WBA, WBC, and IBF titles. Other bodies such as the IBO, IBU, and