UFC 225: Whittaker vs. Romero 2 was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on June 9, 2018, at the United Center in Chicago, Illinois.

[3] A UFC Middleweight Championship bout between current champion Robert Whittaker and former interim title challenger (as well as 2000 Olympic silver medalist and former world champion in freestyle wrestling) Yoel Romero served as the event headliner.

[4][5] The pairing previously met in July 2017 at UFC 213 with Whittaker winning the interim title via unanimous decision.

However, on May 12, it was announced that Chris de la Rocha has replaced Crowder for undisclosed reasons.

[10][11] [13] The following fighters were awarded $50,000 bonuses:[14] On July 7, 2021, it was announced that the Illinois Department of Financial and Professional Regulation overturned Mike Jackson's unanimous decision win against CM Punk to a no contest due to a marijuana positive test on fight night.