Reigning and undisputed ONE welterweight submission grappling world champion Tye Ruotolo of the United States is fresh off his second victory in mixed martial arts competition.The 22-year-old phenom defeated Japanese star Shozo Isojima at ONE 173: Superbon vs. Noiri last Sunday, Nov. 16 at Ariake Arena in Tokyo, Japan, and delivered a first-round submission victory with relative ease. The American also took home a US$50,000 performance bonus for his efforts.Speaking to veteran ONE Championship broadcast analyst Mitch ‘The Dragon’ Chilson in the Circle after the fight, Ruotolo said he would be willing to defend his submission grappling belt next, or accept whatever fight the promotion throws at him.“I'm down for whatever. I haven't done submission grappling in a little while, so if we get a good match, I'm ready to defend that for sure, but wherever you guys want me, I'm ready to go. I have a lot of fun throwing punches too, so whatever.” View this post on Instagram Instagram PostRuotolo is undefeated in ONE Championship, winning all of his submission grappling bouts and is now 2-0 in MMA with wins over Adrian Lee and the aforementioned Isojima.Fans in the United States and Canada can check out ONE 173: Superbon vs. Noiri via replay on-demand through ONE Championship’s new streaming platform at live.onefc.com.What’s next for Tye Ruotolo?It appears Tye Ruotolo could be on his way to make the next defense of his ONE welterweight submission grappling world title next, after the American expressed interest in protecting his gold.However, as of now, there is no clear contender for that throne.Ruotolo will likely head back to MMA competition, where he has a list of options for his next contest in the world’s largest martial arts organization. Some potential names that would be fit for Ruotolo’s talent include Zhang Lipeng, Samat Mamedov, and Maurice Abevi.Stay tuned to Sportskeeda MMA for all the latest news and updates surrounding Tye Ruotolo’s next fight.