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 championship to become the first undisputed World Heavyweight Champion. The only other reigning champion with claim to the belt at the time was Tom Jenkins the American Heavyweight Championship, which unified the American Greco-Roman Championship with the American Catch-As-Catch Can Championship. Jenkins was eventually defeated by Frank Gotch, who took over as the only man with a potentially legitimate claim to being "the true champion". Hackenschmidt and Gotch finally met in the ring on April 3, 1908 in Chicago, Illinois. Gotch defeated Hackenschmidt to win the World Heavyweight Championship, then abandoned the American Heavyweight Championship in a process similar to today's