Japanese boxer Kazuki Anaguchi dies aged 23 after suffering a brain injury during his Boxing Day points loss on pound-for-pound superstar Naoya Inoue's undercard in Tokyo

Anaguchi faced fellow countryman Seiya Tsutsumi on the undercard of pound-for-pound superstar Naoya Inoue's undisputed super-bantamweight clash with Marlon Tapales.