Here is a list of Kambosos Jr.'s best fights. For a list of Kambosos Jr.'s losses, refer to "George Kambosos Jr. Losses".
On July 22, 2023 George Kambosos Jr. faced off against Maxi Hughes in a lightweight bout at age 30. He was coming in with a record of 21-2 (10), and Hughes was 33 years old and with a record of 26-5-2 (5). Kambosos Jr. won the fight via 12-round majority decision.
On October 13, 2017 George Kambosos Jr. faced off against Kaewfah Tor Buamas in a lightweight bout at age 24. He was coming in with a record of 13-0 (7), and Buamas was 31 years old and with a record of 25-2 (16). Kambosos Jr. stopped Kaewfah Tor Buamas via TKO.
On May 6, 2017 George Kambosos Jr. faced off against Qamil Balla in a lightweight bout at age 23. He was coming in with a record of 12-0 (6), and Balla was 27 years old and with a record of 11-0-1 (5). Kambosos Jr. won the fight via 10-round unanimous decision.
On November 27, 2021 George Kambosos Jr. fought Teófimo López in a lightweight world-title fight for López' WBA (Super), IBF, WBO and The Ring titles. Kambosos Jr. was 28 years old and with a record of 20-0 (10), and López was 24 years old and with a record of 16-0 (12). Kambosos Jr. won the fight via 12-round split decision and is crowned the new lightweight world champion.
On October 31, 2020 George Kambosos Jr. faced off against Lee Selby in a lightweight bout at age 27. He was coming in with a record of 19-0 (10), and Selby was 33 years old and with a record of 28-2 (9). Kambosos Jr. won the fight via 12-round split decision.
On December 14, 2019 George Kambosos Jr. faced off against Mickey Bey in a lightweight bout at age 26. He was coming in with a record of 18-0 (10), and Bey was 36 years old and with a record of 23-2-1 (11). Kambosos Jr. won the fight via 10-round split decision.
