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 at the Ariake Arena in Tokyo, Japan. Kim gave a spirited effort,

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

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.

Here's all you need to know ahead of Naoya Inoue's undisputed junior featherweight title defense against late replacement Ye Joon Kim on Friday.

Naoya Inoue, ESPN's No. 3 pound-for-pound boxer, will help usher in the 2025 title fight slate with his third defense of the undisputed 122-pound championship early Friday in Tokyo (ESPN+, 4:15 a.m. ET).

The Japanese star kept hold of his super-bantamweight belts with a fourth-round stoppage of Kim, who stepped in for the injured Sam Goodman

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

Naoya Inoue continued to build his legacy as the Japanese boxer brutally knocked out Ye Joon Kim on January 24. South Korean Kim stepped in on two weeks' notice after Inoue's original opponent, Sam Goodman,