World Series of Boxing

AIBA confirmed in 2019 that the league had ceased operations amid mounting financial losses.

The league folded due to the unprofitable nature of amateur boxing in North America.

Each participating boxer was drafted by one of its international franchises, and could earn money by taking part in professional-style bouts.

A WSB meet between two international franchises consisted of bouts in ten (formerly five) weight categories.

In the fourth season (2013–14), the number of weight classes was increased to ten, mirroring amateur (Olympic) boxing.