Which fighter defeated Jon Jones at UFC 214 before the result was overturned?

Daniel Cormier defeated Jon Jones at UFC 214 before the result was overturned to a no contest.

The light heavyweight title fight took place on July 29, 2017, at Honda Center in Anaheim, California. Jones stopped Cormier with a head kick and follow-up punches in the third round, appearing to win the championship.

The result was later changed after Jones tested positive for turinabol, an anabolic steroid metabolite. The California State Athletic Commission overturned the victory and restored Cormier as champion. Jones received a suspension from USADA and the commission.

Because of the overturning, official records list the bout as a no contest rather than a Jones victory. Cormier therefore remained the recognized UFC light heavyweight champion after the event.