Watch Online Free on Watchseries. ONE 172: Takeru vs. Rodtang was a combat sports event produced by ONE Championship that took place on March 23, 2025, at the Saitama Super Arena in Saitama, Japan. A five-round flyweight kickboxing superfight between former ONE Flyweight Muay Thai World Champion Rodtang Jitmuangnon and former three-divisions K-1 World Champion Takeru Segawa headlined the event.