[5] They were head coaches on The Ultimate Fighter: Heavy Hitters and Whittaker was expected to defend his title against Gastelum at UFC 234 in February 2019, but pulled out hours before that event due to a collapsed bowel and an internal hernia that required emergency surgery.

[8] Former Invicta FC Atomweight Champion and UFC Women's Strawweight Championship challenger Jessica Penne and Hannah Goldy were expected to meet in a women's strawweight bout at UFC 260, but Goldy tested positive for COVID-19 and the bout was postponed.

[12] However, Porter was removed from the bout on April 7 due to undisclosed reasons and replaced by former UFC Heavyweight Champion Andrei Arlovski.

The pairing remained intact and was rescheduled for UFC Fight Night: Font vs. Garbrandt[18] At the weigh-ins, Tracy Cortez and Zarah Fairn Dos Santos missed weight for their respective bouts.

[21] However, Klose withdrew citing injuries that he claimed were triggered by a Stephens shove at the weigh-ins and the bout was pulled from the card just hours before the event.