Jennifer Han has five losses against five opponents on her boxing record. For a list of Han's best fights, refer to "Best fights of Jennifer Han".
On April 9, 2022 Jennifer Han fought Mikaela Mayer in a super-featherweight world-title fight for Mayer's WBO, IBF and The Ring titles. Han was 38 years old and with a record of 18-5-1 (1), and Mayer was 31 years old and with a record of 16-0 (5). Han lost the fight via 10-round unanimous decision.
On September 4, 2021 Jennifer Han fought Katie Taylor in a lightweight world-title fight for Taylor's WBA, WBC, IBF, WBO and The Ring titles. Han was 38 years old and with a record of 18-4-1 (1), and Taylor was 35 years old and with a record of 18-0 (6). Han lost the fight via 10-round unanimous decision.
On March 23, 2014 Jennifer Han faced off against Ji-Hye Woo in a featherweight bout at age 30. She was coming in with a record of 10-3-1 (1). Han lost the fight via 10-round majority decision.
On October 27, 2012 Jennifer Han faced off against Claudia Gutierrez at age 29. She was coming in with a record of 8-2-1 (1). Han lost the fight via 4-round split decision.
On July 31, 2009 Jennifer Han faced off against Melissa St. Vil at age 26. She was coming in with a record of 0-1 (0). Han lost the fight via 4-round majority decision.