Here is a list of Sánchez's best fights. For a list of Sánchez's losses, refer to "Frank Sánchez Losses".
On October 9, 2021 Frank Sánchez faced off against Efe Ajagba in a heavyweight bout at age 29. He was coming in with a record of 19-0 (13), and Ajagba was 27 years old and with a record of 15-0 (12). Sánchez won the fight via 10-round unanimous decision.
On December 23, 2023 Frank Sánchez faced off against Junior Fa in a heavyweight bout at age 31. He was coming in with a record of 24-0 (17), and Fa was 34 years old and with a record of 20-2 (11). Sánchez stopped Junior Fa via TKO.
On October 15, 2022 Frank Sánchez faced off against Carlos Negrón in a heavyweight bout at age 30. He was coming in with a record of 21-0 (14), and Negrón was 34 years old and with a record of 25-3 (20). Sánchez stopped Carlos Negrón via TKO.
On January 1, 2022 Frank Sánchez faced off against Christian Hammer in a heavyweight bout at age 29. He was coming in with a record of 20-0 (13), and Hammer was 34 years old and with a record of 26-8 (16). Sánchez won the fight via 10-round unanimous decision.
On September 30, 2023 Frank Sánchez faced off against Scott Alexander in a heavyweight bout at age 31. He was coming in with a record of 23-0 (16), and Alexander was 34 years old and with a record of 17-5-2 (9). Sánchez stopped Scott Alexander via retirement.