Conor McGregor and Chad Mendes competed in a featherweight title bout at UFC 189 in Las Vegas, Nevada [1, 2].

The fight represented a pivotal moment in the featherweight division. Because McGregor had earned a title shot after an impressive run, the organization scheduled the bout as an interim championship fight [1].

The event took place on July 11, 2015 [2]. This appearance marked McGregor's sixth fight within the UFC [1]. The matchup brought together two of the most prominent athletes in the weight class at the time, both known for their aggressive styles.

UFC 189 was hosted in the U.S. city of Las Vegas [1]. The bout was designed to determine a champion while the primary title holder was unavailable. This structure allowed the promotion to maintain momentum in the featherweight division during the summer of 2015.

While the historical record focuses on the Mendes fight, newer promotional materials from the UFC suggest a different trajectory for McGregor. A recent video description from the organization promotes a future rematch between McGregor and Max Holloway at UFC 329 [3].

The bout was scheduled as an interim feather-weight championship fight.

The fight between McGregor and Mendes serves as a historical benchmark for the featherweight division's growth. By utilizing an interim title, the UFC established a precedent for keeping championship narratives active during athlete absences. The mention of a potential rematch with Max Holloway indicates that the UFC continues to leverage McGregor's historical rivalry and name recognition to drive viewership for upcoming events.