Kim, a 32-year-old native of South Korea, filled in on late notice to replace Australia's Sam Goodman, a mandatory challenger who twice pulled out of scheduled bouts against Inoue over the past two months due to a cut suffered in sparring.

Naoya Inoue managed to earn a devastating knockout finish against Ye Joon Kim on Friday, January 24. Inoue was originally set to face Sam Goodman, who was force

Follow along for round-by-round updates as Naoya Inoue puts his undisputed crown on the line against Ye Joon Kim.

Here’s everything you need to know about Naoya Inoue vs. Ye Joon Kim as they battle for the undisputed junior featherweight championship.

Naoya Inoue made quick work of late-replacement Ye Joon Kim, stopping him in the fourth round to remain the undisputed junior featherweight champion on Friday a

Naoya Inoue's barrage in the fourth round sends Ye Joon Kim to the canvas as the Japanese fighter retains his belts.

Japan's unbeaten Naoya Inoue said he was mentally "exhausted" after knocking out a goading Kim Ye-joon to retain his undisputed world super-bantamweight titles in Tokyo on Friday night. Inoue is expected to take his prodigious skills to Las Vegas for his next fight,

Naoya Inoue managed to earn a devastating knockout finish against Ye Joon Kim on Friday, January 24. Inoue was originally set to face Sam Goodman, who was forced to pull out. Kim stepped in on short notice to take on one of the scariest tasks in boxing,