Following his MMA setbacks, Chaves redirected his competitive focus entirely toward No-Gi grappling — the discipline in which he would ultimately cement his legacy. In 2008, he reached the podium at the Pan American No-Gi Championship, claiming a bronze medal. The following year, despite continued physical challenges, he returned to the world stage and again earned a podium finish at the World No-Gi Championship in 2009.
Injuries resurfaced in 2010, forcing yet another extended absence from competition. The pattern of setbacks followed by determined returns became a defining characteristic of Chaves' career arc. In 2011, that resilience produced its greatest reward: Chaves claimed the World No-Gi Championship title, fulfilling the potential that had been evident since his early years at The Armory. He returned to the World No-Gi Championship in 2012 and captured the title again in the Master division, cementing his standing as one of the premier No-Gi competitors of his generation. The two world titles, earned across multiple comebacks from serious injury, stand as a testament to his technical excellence and competitive durability under the Checkmat banner.