Naoya Inoue put his undisputed super bantamweight title on the line against Ramon Cardenas at the T-Mobile Arena in Las Vegas May 4. Inoue came into the contest looking to add another knockout to his collection.

Naoya Inoue survives scare to knockout Ramon Cardenas and remain undefeated - The 30-0 featherweight was knocked down by Cardenas but eventually prevailed in the eighth round

In the main event of Sunday's Top Rank Boxing card, Inoue remained undefeated and retained his undisputed junior featherweight championship with an eighth-round TKO win against Ramon Cardenas in a thriller at T-Mobile Arena in Las Vegas. He improved to 30-0 with 27 knockouts.