World Series of Boxing Like professional boxing, each bout is decided by the scores of three judges or, in some cases, by a knockout, technical knockout or walk-over. A WSB meet between two international franchises consists of bouts in ten (formerly five) weight categories. There are five three-minute rounds in each bout and the team that wins the most number of bouts wins the meet. Until season 4, there were five weight categories which were different than 10 categories in amateur (Olympic) boxing or 17 categories in professional boxing. These were Heavyweight (91+ kg), Light heavyweight (80–85 kg), Middleweight (68–73 kg), Lightweight (57–61 kg)
Olympic sports dropped from the Olympics since 1936 are baseball and softball, which were both voted out by the IOC Session in Singapore on July 11, 2005, a decision that was reaffirmed on February 9, 2006. These sports were last included in 2008, although officially they remain recognized as Olympic sports in the Olympic Charter. Therefore, the number of sports in the 2012 Summer Olympics was dropped from 28 to 26. Following the addition of women's boxing in 2012, and women's ski jumping in 2014, there are only Greco-Roman wrestling and nordic combined, respectively, that are only for men in those games.