Reigning ONE flyweight MMA world champion Yuya Wakamatsu knows the stakes couldn't be higher, and he's prepared to empty the tank in his first world title defense on Nov. 16.The Japanese warrior, nicknamed 'Little Piranha', returns to the global stage of ONE Championship next month, putting his crown on the line against ONE strawweight MMA world champion Joshua Pacio.Their world title matchup is one of many exciting battles across Muay Thai, MMA, kickboxing, and submission grappling that will be part of ONE 173: Superbon vs. Noiri inside the Ariake Arena.Ahead of fight night, ONE Championship caught up with the Tribe Tokyo MMA about his mindset heading into the biggest fight of his life."All I can do is fight with everything I have. From the opening bell, there will be tension. I hope the fans can enjoy that tension. Because honestly, you never know which of us will go down," Yuya Wakamatsu said. View this post on Instagram Instagram PostYuya Wakamatsu vs. Joshua Pacio promises an unpredictable and entertaining battle The uncertainty Yuya Wakamatsu references creates intrigue heading into their all-champion clash at ONE 173 in Tokyo, Japan.Both fighters bring world championship pedigree, well-rounded skillsets, and the ability to finish fights, making this one of the most unpredictable matchups on the entire card.The 29-year-old Pacio, who seeks to become the first Filipino two-division MMA world champion in history, brings years of championship experience and has proven time and again his ability to rise to the occasion in high-stakes battles.For Wakamatsu, his commitment to bring his A-game reflects a warrior who understands that he has to give every ounce of effort from opening bell to final horn.The clash between defending champion and legendary challenger, combined with the high stakes and mutual respect, sets the stage for what could be one of the most memorable world title fights in the world's largest martial arts organization.Who walks away with the flyweight crown when these two elite mixed martial artists collide? Share your predictions below!Tickets for ONE 173: Superbon vs. Noiri are available here. Meanwhile, watch.onefc.com has all the how-to-watch details for ONE's blockbuster return to Japan.