UFC 320 fighter with previous scale fail misses weight a second time — ‘Disrespecting the sport’

Macy Chiasson missed weight for her bantamweight showdown against Yana Santos, scheduled for the UFC 320 fight card on Oct. 4 at T-Mobile Arena in Las Vegas.

Kelvin Gastelum would be proud.

Chiasson, 34, was fined 25-percent of her purse but the fight will go on, though her future in the bantamweight division may be in jeopardy following her latest scale fail. The former Ultimate Fighter (TUF) 28 champ also missed weight for UFC Vegas 45 battle against Raquel Pennington.

Fortunately, the fight will go on.

“Imagine signing a contract and showing up overweight AGAIN,” Santos wrote on social media. “Some of us respect the grind. Others disrespect the sport. See you Saturday.”

For complete UFC 320 weigh ins results and video click here.

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LIGHT HEAVYWEIGHT TITLE REMATCH! Ultimate Fighting Championship (UFC) continues its 2025 pay-per-view (PPV) schedule on Sat., Oct. 4, 2025, with a blockbuster title fight set to headline UFC 320 from inside T-Mobile Arena in Las Vegas, Nevada. In UFC 320’s PPV main event, Light Heavyweight champion, Magomed Ankalaev, defends his title against No. 1-ranked contender, Alex Pereira, in a high-stakes, five-round rematch. UFC 320’s PPV co-main event features a Bantamweight title showdown between division champion, Merab Dvalishvili, and No. 1-ranked contender, Cory Sandhagen. UFC 320 will also showcase a Light Heavyweight clash between Jiri Prochazka vs. Khalil Rountree Jr., a Featherweight bout pitting Josh Emmett vs. Youssef Zalal, a Middleweight matchup featuring Abus Magomedov vs. Joe Pyfer, and much more! UFC 320’s start time is scheduled for 6 p.m. ET (“Early Prelims”), 8 p.m. ET (“Prelims” undercard), and 10 p.m. ET (PPV main card).

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MMAmania.com will deliver LIVE round-by-round, blow-by-blow coverage of the entire UFC 320 fight card on fight night, starting with the early ESPN+ “Prelims” matches at 6 p.m. ET, followed by the remaining undercard balance on ESPNN/ESPN+ at 8 p.m. ET, before the UFC 320 PPV main card start time at 10 p.m. ET on ESPN+ PPV.

To check out the latest and greatest UFC 320: “Ankalaev vs. Pereira 2” news and notes be sure to hit up our comprehensive event archive right here. For the updated and finalized UFC 320 fight card and PPV lineup click here.