Macy Chiasson has four losses against four opponents on her MMA record. For a list of Chiasson's best fights, refer to "Best fights of Macy Chiasson".
On May 31, 2025 Macy Chiasson faced off against Ketlen Vieira in a featherweight bout at age 33. She was coming in with a record of 10-4 (6), and Vieira was 33 years old and with a record of 14-4 (6). Chiasson lost the fight via 3-round unanimous decision.
On September 10, 2022 Macy Chiasson faced off against Irene Aldana in a featherweight bout at age 31. She was coming in with a record of 8-3 (4), and Aldana was 34 years old and with a record of 13-6 (10). Chiasson lost the fight via 3rd-round KO.
On December 18, 2021 Macy Chiasson faced off against Raquel Pennington in a featherweight bout at age 30. She was coming in with a record of 7-2 (4), and Pennington was 33 years old and with a record of 12-8 (3). Chiasson lost the fight via 2nd-round submission.
On September 28, 2019 Macy Chiasson faced off against Lina Länsberg in a bantamweight bout at age 28. She was coming in with a record of 5-1 (4), and Länsberg was 37 years old and with a record of 9-4 (4). Chiasson lost the fight via 3-round unanimous decision.
