Sumiko Inaba has two losses against two opponents on her MMA record. For a list of Inaba's best fights, refer to "Best fights of Sumiko Inaba".
On July 19, 2025 Sumiko Inaba faced off against Dakota Ditcheva at age 34. She was coming in with a record of 8-2 (5), and Ditcheva was 26 years old and with a record of 14-0 (13). Inaba lost the fight via 3-round unanimous decision.
On November 17, 2023 Sumiko Inaba faced off against Denise Kielholtz at age 32. She was coming in with a record of 6-1 (4), and Kielholtz was 34 years old and with a record of 7-5 (5). Inaba lost the fight via 3-round unanimous decision.
