| UFC on Fox: Weidman vs. Gastelum | |
| Promotion: | Ultimate Fighting Championship |
| Date: | July 22, 2017 |
| Venue: | Nassau Veterans Memorial Coliseum |
| City: | Uniondale, New York |
| Attendance: | 11,918[1] |
| Gate: | $1,088,332 |
| Followingevent: | UFC 214: Cormier vs Jones 2 |
UFC on Fox: Weidman vs. Gastelum (also known as UFC on Fox 25) was a mixed martial arts event produced by the Ultimate Fighting Championship held on July 22, 2017, at the Nassau Veterans Memorial Coliseum in Uniondale, New York.[2]
The event was the first that the UFC has hosted on Long Island.
The event was headlined by a middleweight bout between former UFC Middleweight Champion Chris Weidman and middleweight winner Kelvin Gastelum.[3]
A featherweight bout between former UFC Featherweight Championship challengers Ricardo Lamas and Chan Sung Jung was originally in the works to headline or co-headline this event.[4] The pairing was originally slated to take place in July 2013 at UFC 162, but Jung was pulled from the bout in favor of a title fight against then champion José Aldo at UFC 163.[5] On May 12, the bout was confirmed for UFC 214.[6]
A light heavyweight bout between Gian Villante and Patrick Cummins was originally booked for in December 2016. However, Cummins pulled out a week before the event due to a staph infection.[7] The fight eventually took place at this event.[8]
A heavyweight bout between Christian Colombo and Damian Grabowski was expected to take place at . However, the pairing was scrapped as both fighters sustained injuries in the weeks leading up to the event.[9] The fight was rescheduled to take place at this event.[10] Subsequently, Colombo was removed from the fight on June 22 for undisclosed reasons and was replaced by Chase Sherman.[11]
Alessio Di Chirico was expected to face Rafael Natal, but pulled out in the weeks leading up to the event due to a neck injury and was replaced by promotional newcomer Eryk Anders.[12]
The following fighters were awarded $50,000 bonuses:[14]