Macy Chiasson

USA
Drops decision after weight miss
Chiasson lost to Yana Santos via unanimous decision (28-29, 28-29, 28-29) at UFC 320 on Saturday in Las Vegas.
ANALYSIS
It's been a disastrous past 36 hours for Chiasson. She missed weight by 1.5 pounds Friday morning and had to forfeit 25 percent of her purse to Santos in order for the fight to proceed. She then took off the first two rounds before making a huge surge in Round 3. It ended up not being enough. Outside of a rear-naked choke attempt in the final minute-plus, Chiasson did next to nothing offensively. When you combine with the weight miss with a two-fight losing streak, Macy is probably looking at a must-win situation her next time out in order to save her roster spot.
It's been a disastrous past 36 hours for Chiasson. She missed weight by 1.5 pounds Friday morning and had to forfeit 25 percent of her purse to Santos in order for the fight to proceed. She then took off the first two rounds before making a huge surge in Round 3. It ended up not being enough. Outside of a rear-naked choke attempt in the final minute-plus, Chiasson did next to nothing offensively. When you combine with the weight miss with a two-fight losing streak, Macy is probably looking at a must-win situation her next time out in order to save her roster spot.
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Weighs in heavy
Chiasson missed weight ahead her bout with Yana Santos, and the fight will proceed at a catchweight, per Alexander K. Lee of MMAFighting.com.
ANALYSIS
Chiasson weighed in at 137.5 pounds, which is 1.5 pounds over the limit. She'll forfeit 25 percent of her purse to Santos as a result, but the fight will continue as scheduled. Chiasson is looking for a bounce-back win after dropping her last bout in May.
Chiasson weighed in at 137.5 pounds, which is 1.5 pounds over the limit. She'll forfeit 25 percent of her purse to Santos as a result, but the fight will continue as scheduled. Chiasson is looking for a bounce-back win after dropping her last bout in May.
Next bout scheduled
Chiasson will fight Yana Santos at UFC 320 on Oct. 4, Marcel Dorff of Eurosport.nl reports.
ANALYSIS
The 5-foot-11 bantamweight will get her chance to bounce back after losing to Ketlen Vieira via unanimous decision back in May. Chiasson is 3-3 in her last six UFC matches but 2-1 since 2024, and the veteran Santos is on a two-fight winning streak.
The 5-foot-11 bantamweight will get her chance to bounce back after losing to Ketlen Vieira via unanimous decision back in May. Chiasson is 3-3 in her last six UFC matches but 2-1 since 2024, and the veteran Santos is on a two-fight winning streak.
Grounded by Ketlen Vieira
Chiasson lost to Ketlen Vieira via unanimous decision (28-29, 28-29, 27-30) at UFC Fight Night on Saturday in Las Vegas.
ANALYSIS
This was originally scheduled to be a bantamweight fight but was switched to featherweight after Vieira had weight-cutting issues. When all was said and done, the switch really appeared to impact Chiasson because she had no answers for the size and brute strength of her opponent. Macy gave up 10:06 worth of control time and spent nearly the entirety of the final two rounds on her back. She simply just didn't generate enough offense to potentially win a decision. Set to turn 34 years old in late-July, this felt like a victory Chiasson -- who entered having won three of four -- had to have.
This was originally scheduled to be a bantamweight fight but was switched to featherweight after Vieira had weight-cutting issues. When all was said and done, the switch really appeared to impact Chiasson because she had no answers for the size and brute strength of her opponent. Macy gave up 10:06 worth of control time and spent nearly the entirety of the final two rounds on her back. She simply just didn't generate enough offense to potentially win a decision. Set to turn 34 years old in late-July, this felt like a victory Chiasson -- who entered having won three of four -- had to have.
Vieira fight now featherweight
Chiasson is scheduled to compete against Ketlen Vieira in a featherweight fight at UFC Vegas 107 on Saturday, according to Nolan King of MMA Junkie.
ANALYSIS
It is unknown why the Chiasson-Vieira fight went up a weight class from bantamweight. The last time Chiasson fought at featherweight, she submitted to former UFC bantamweight champion Raquel Pennington at UFC Vegas 45 in December 2021.
It is unknown why the Chiasson-Vieira fight went up a weight class from bantamweight. The last time Chiasson fought at featherweight, she submitted to former UFC bantamweight champion Raquel Pennington at UFC Vegas 45 in December 2021.
Slated to face Vieira again
Chiasson will take on Ketlen Vieira in a bantamweight bout at UFC Vegas 107 on May 31, Marcel Dorff of Eurosport.nl reports.
ANALYSIS
Chiasson was expected to take on Vieira twice in the past, in Jan. 2023 and Feb. 2025, but both fights got canceled. It remains to be seen if this one will actually go through. Chiasson will aim to extend her winning run to three fights, while Vieira is looking to bounce back after losing her most recent bout to Kayla Harrison.
Chiasson was expected to take on Vieira twice in the past, in Jan. 2023 and Feb. 2025, but both fights got canceled. It remains to be seen if this one will actually go through. Chiasson will aim to extend her winning run to three fights, while Vieira is looking to bounce back after losing her most recent bout to Kayla Harrison.