直樹 defeated 細川一颯 by referee stoppage in the second round of a RIZIN 69kg contract match. 細川一颯 sustained a left eye injury from a right hand in the first round before an elbow strike caused severe swelling above the brow, prompting the stoppage in round two. Despite the loss, 細川一颯 demonstrated notable toughness and heart throughout the contest.
Naoki claimed a second-round stoppage victory over Hosokawa Kazusa in a 69-kilogram contract bout at a RIZIN event on August 11, 2026, with a referee intervention ending the fight after a damaging elbow strike opened a severe cut above the brow.
The finish had its roots in the opening round, when a Naoki right hand landed flush and began damaging Hosokawa's left eye. Hosokawa showed considerable resilience to survive the stanza and continue, but the punishment compounded in the second round when an elbow strike caused severe swelling above the brow that left the referee with no choice but to wave off the contest.
The circumstances of the stoppage told two separate stories. Naoki demonstrated sharp, precise striking — combining heavy punches with targeted elbows to systematically break down a specific area — while Hosokawa's willingness to press forward and absorb significant damage before the stoppage earned him clear recognition for toughness and competitive spirit.
Why it matters
- The 69-kilogram weight class sits outside the standard RIZIN flyweight and featherweight divisions, meaning contract-weight bouts like this often serve as showcase opportunities for fighters building momentum.
- A second-round finish by technical striking, particularly through eye and brow damage, signals Naoki as a punishing, accurate knockout threat at this weight.
- Hosokawa's performance, despite the loss, reinforced his reputation as a durable, gutsy competitor who will remain relevant in future RIZIN matchmaking.
