ONE welterweight submission grappling world champion Tye Ruotolo's flawless transition to mixed martial arts continues to impress fight fans and ONE Championship.The 22-year-old submission specialist extended his MMA record to 2-0 with a dominant first-round rear-naked choke submission of previously undefeated Japanese judoka Shozo Isojima at ONE 173: Superbon vs. Noiri on Sunday, Nov. 16, inside Tokyo's Ariake Arena.Shortly after exiting the Circle, Ruotolo received congratulations from ONE Championship Chairman and CEO Chatri Sityodtong, who didn't hold back his admiration for the young American's masterful performance against a dangerous opponent."He's a tough guy, you made it look easy," Chatri told Tye Ruotolo during their short exchange at Circle-side.Ruotolo's triumph, which also earned him another US$50,000 performance bonus, was another display of full brilliance.While many expected the Tenore representative to hunt for submissions immediately, given his Brazilian jiu-jitsu black belt credentials, he showcased calculated striking and devastating knees before taking the fight to the canvas.Once the bout hit the ground, Ruotolo's world-class grappling took charge, and he sunk in the match-winning rear-naked choke with precision that forced a tap from the Japanese fighter at 2:26 of the opening round. View this post on Instagram Instagram PostTye Ruotolo is making steady progress toward his two-sport dream in ONE ChampionshipAfter sinking in a similar choke to take out Adrian Lee in his debut at ONE Fight Night 35 in September, Tye Ruotolo showed why he's going to be one to watch in MMA over the coming years.Ruotolo didn't put a foot wrong as he handed Isojima the first defeat of his career inside the Japanese capital last Sunday. With more performances like that against experienced opponents, Ruotolo could be knocking on the door of a world title shot to complete his two-sport dream in ONE Championship.There will be many contenders waiting to see just how good he is, and he might face a few bumps perhaps on his journey to the top. However, as long as he racks up more experience in the all-encompassing discipline, ONE lightweight and welterweight MMA world champion Christian Lee could have a new fighter to think about in the world title conversation.Fans who missed any of the action from ONE 173: Superbon vs. Noiri can head to live.onefc.com to purchase the pay-per-view replay ticket. ONE Championship's blockbuster return to Tokyo featured five world title fights across MMA, Muay Thai, and kickboxing inside the Ariake Arena.