UFC on Fox: Alvarez vs. Poirier 2 (also known as UFC on Fox 30) was a mixed martial arts event produced by the Ultimate Fighting Championship held on July 28, 2018 at the Scotiabank Saddledome in Calgary, Alberta, Canada.

[2] The event was the second that the promotion has contested in Calgary, following UFC 149 in July 2012.

[4][5] Their first bout at UFC 211 in May 2017 was ruled a no contest after Alvarez hit a downed Poirier with illegal knees in the second round.

[6] A light heavyweight bout between Gadzhimurad Antigulov and Ion Cuțelaba was previously scheduled for UFC 217.

However, Antigulov pulled out of the fight due to injury and the bout was scrapped.