Here is a list of Ham's best fights. For a list of Ham's losses, refer to "Seo Hee Ham Losses".
On November 28, 2015 Seo Hee Ham faced off against Cortney Casey in a strawweight bout at age 28. She was coming in with a record of 17-6 (3), and Casey was 28 years old and with a record of 4-2 (4). Ham won the fight via 3-round unanimous decision.
On October 12, 2019 Seo Hee Ham faced off against Miyuu Yamamoto in a atomweight bout at age 32. She was coming in with a record of 22-8 (7). Ham stopped Miyuu Yamamoto via TKO.
On November 4, 2013 Seo Hee Ham faced off against Sadae Numata in a atomweight bout at age 26. She was coming in with a record of 13-5 (2). Ham won the fight via 3-round unanimous decision.
On February 25, 2011 Seo Hee Ham faced off against Saori Ishioka in a lightweight bout at age 23. She was coming in with a record of 8-4 (1). Ham won the fight via 2-round unanimous decision.
On November 3, 2014 Seo Hee Ham faced off against Saori Ishioka in a atomweight bout at age 27. She was coming in with a record of 16-5 (3). Ham stopped Saori Ishioka via submission.
On February 16, 2007 Seo Hee Ham faced off against Hisae Watanabe at age 19. She was coming in with a record of 1-0 (0). Ham won the fight via 2-round unanimous decision.
On July 28, 2019 Seo Hee Ham faced off against Tomo Maesawa in a atomweight bout at age 32. She was coming in with a record of 21-8 (6). Ham stopped Tomo Maesawa via TKO.
On March 25, 2023 Seo Hee Ham faced off against Itsuki Hirata in a atomweight bout at age 36. She was coming in with a record of 26-8 (7), and Hirata was 23 years old and with a record of 6-1 (4). Ham won the fight via 3-round unanimous decision.
On December 31, 2019 Seo Hee Ham fought Ayaka Hamasaki in a atomweight title fight for Hamasaki's Rizin Super Championship title. Ham was 32 years old and with a record of 23-8 (7). Ham won the fight via 3-round split decision and is crowned the new Rizin atomweight champion.
On July 9, 2011 Seo Hee Ham faced off against Mei Yamaguchi in a lightweight bout at age 24. She was coming in with a record of 10-4 (1), and Yamaguchi was 28 years old and with a record of 8-2-1 (4). Ham won the fight via 2-round unanimous decision.