Sumiko Inaba losses

Over 5 years as a professional, Sumiko Inaba has compiled a 8-3 (5) record. She has three losses.

1. 3. Sumiko Inaba loses to Ariane Lipski da Silva via unanimous decision

   On March 28, 2026 Sumiko Inaba faced Ariane Lipski da Silva in a flyweight bout. Inaba was 35 years old with a record of 8-2, and Silva was 32 with a record of 17-11. Inaba was coming off a loss and Silva was on a 3-fight losing streak. Inaba lost via unanimous decision. Went the distance with Silva.

2. 2. Sumiko Inaba loses to Dakota Ditcheva via unanimous decision

   On July 19, 2025 Sumiko Inaba faced Dakota Ditcheva in a flyweight bout. Inaba was 34 years old with a record of 8-1, and Ditcheva was 26 with a record of 14-0. Inaba was on a 2-fight winning streak and Ditcheva was on an undefeated 14-fight winning streak. Inaba lost via unanimous decision. Went the distance with Ditcheva.

3. 1. Sumiko Inaba loses to Denise Kielholtz via unanimous decision

   On November 17, 2023 Sumiko Inaba faced Denise Kielholtz in a flyweight bout. Inaba was 32 years old with a record of 6-0, and Kielholtz was 34 with a record of 7-5. Inaba was on an undefeated 6-fight winning streak and Kielholtz was coming off a win. Inaba lost via unanimous decision. Went the distance with Kielholtz.