Alexandre Pantoja dislocated his left shoulder 26 seconds into the co‑main event at UFC 323 after stepping to throw a head kick and landing on his arm, and the referee stopped the fight after he signaled he could not continue.Challenger Joshua Van was awarded the flyweight title by default and celebrated in the ring; Pantoja will undergo additional imaging in Florida and meet an orthopedic doctor, and the injury prevents an immediate rematch while Van becomes the second‑youngest UFC champion behind Jon Jones.