Ryosuke Nishida Edges Out as Bigger Man in IBF Title Eliminator Showdown
Ryosuke Nishida arrived at the scales as the heavier fighter, despite facing a natural junior featherweight. The former IBF 118-pound champion weighed in just under the 122-pound limit for his battle with Mexico City’s Bryan Mercado, who came in noticeably lighter. Nishida checked in at 121.9 pounds, while Mercado was a fit 120.8 pounds—the lightest mark of his career in more than ten years—setting the stage for Sunday’s IBF junior featherweight title eliminator.
U-Next will stream the fight exclusively in Japan, live from Sumiyoshi Sports Center in Nishida’s hometown of Osaka.
Mercado, with a 32-1 record featuring 26 knockouts, enters the ring at his lightest since his second pro contest—the very bout that remains his lone defeat. The 30-year-old Mexico City native has surged to 31 straight wins, including 11 knockouts in his past 12 fights.
In contrast, Nishida, currently 10-1 with 2 KOs, arrived at his heaviest weight in more than five years. He has spent most of his career at bantamweight, where he captured the IBF title with a May 2024 points win over Emmanuel Rodríguez of Puerto Rico. A single successful defense followed before a sixth-round stoppage at the hands of fellow Japanese fighter Junto Nakatani, who is 31-0 with 24 KOs. The Nakatani bout, staged last June at Ariake Colosseum in Tokyo as part of a WBC/IBF unification, marked Nishida’s last appearance at bantamweight for the time being.
Nakatani subsequently moved up to 122 pounds last December, narrowly defeating the previously unbeaten Sebastian Hernández in Riyadh, Saudi Arabia. The bout was part of Riyadh Season’s “Japan vs. the World” lineup, headlined by Naoya Inoue’s victory over Alan David Picasso to defend his undisputed 122-pound crown.
Current plans still target a matchup between Inoue and Nakatani on May 2, though the official date has not been confirmed at the time of writing.
Regardless of Sunday’s result, the victor will become the IBF mandatory challenger to the winner between Inoue and Nakatani, setting the stage for what could be boxing’s most significant clash in Japanese history.
Jake Donovan is an award-winning journalist who has contributed to BoxingScene as a senior writer (2007–2024) and served as news editor in the latter nine years of his first stint. He was also the lead writer for The Ring before returning to his roots. Follow Jake on X (https://x.com/JakeBScene) and Instagram (https://www.instagram.com/jakendabox_).
