Most siblings to hold world boxing titles simultaneously

The most siblings to hold major boxing titles simultaneously is three and was achieved by the Kameda brothers – Koki Kameda, Daiki Kameda and Tomoki Kameda (all Japan) - at the Sun Messe Kagawa in Takamatsu, Kagawa, Japan, on 3 September 2013. The record was achieved with Daiki Kameda's victory over Rodrigo Guernero in the IBF World Championship Superfly title match. Koki Kameda, the eldest of the three, is currently the WBA Bantamweight champion and Tomoki, the youngest is the WBO Bantamweight champion.