Stephen Fulton Jr. has two losses against two opponents on his boxing record. For a list of Fulton Jr.'s best fights, refer to "Best fights of Stephen Fulton Jr.".
On December 6, 2025 Stephen Fulton Jr. fought O'Shaquie Foster in a lightweight world-title fight for the WBC title. Fulton Jr. was 31 years old and with a record of 23-2 (8), and Foster was 32 years old and with a record of 23-3 (12). Fulton Jr. lost the fight via 12-round unanimous decision.
On July 25, 2023 Stephen Fulton Jr. met Naoya Inoue in a super-bantamweight (WBC, WBO) world-title defense fight. Fulton Jr. was 29 years old and with a record of 21-1 (8), and Inoue was 30 years old and with a record of 24-0 (21). Fulton Jr. lost the fight via 8th-round TKO and lost the titles.
