For over three decades, Jerry Jones has bet big on the Dallas Cowboys. But one of his biggest gambles may have come off the gridiron.

Dallas Cowboys owner Jerry Jones has credited an experimental trial drug for successfully treating advanced melanoma as he disclosed his cancer diagnosis publicly for the first time.

Jones made a passing reference in the documentary to undergoing cancer treatments “about a dozen years ago.” Jones confirmed to the Dallas Morning News that he was diagnosed with stage 4 melanoma in June of 2010 and underwent treatment over the following decade.