The distance (boxing) 19, 1987. While the International Boxing Federation, which had recently broken away from the WBA, continued to hold onto the position there was no documented medical evidence to show a 15-round fight is more dangerous than a 12-round fight, they eventually voted to shorten their championship distance to 12 rounds as well on June 3, 1988. The last heavyweight 15-rounder title fight was on October 16, 1987 between Mike Tyson and Tyrell Biggs. The last middleweight 15-rounder title fight was a World Boxing Board title match on June 7, 1997 in which Jose Alfredo Flores won a split decision over
Girls S-Cup Nanae Takahashi and Fuka Kakimoto, and a 59 kg match. The event also featured an MMA match under co-promoter JEWELS' rules. Two special rules children's bouts under Fuka's management were presented, one of which showcased later puroresu prodigy Haruka. Shoot Boxing World Tournament Girls S-Cup 2011 was the event that featured the third of Girls S-Cup tournaments. The event was promoted by the Shoot Boxing Association. It was competed in the 51 kg weight class, also featuring a 48 kg opening match, one 70 kg and one 50 kg "Super Fight". Former champion Rena Kubota did not participate in the