Here is a list of Fujii's best fights. For a list of Fujii's losses, refer to "Katsuhisa Fujii Losses".
On September 30, 2001 Katsuhisa Fujii faced off against Jason DeLucia in a heavyweight bout at age 29. He was coming in with a record of 4-6-1 (4), and DeLucia was 32 years old and with a record of 32-18-1 (18). Fujii stopped Jason DeLucia via TKO.
On November 19, 1999 Katsuhisa Fujii faced off against Masutatsu Yano in a heavyweight bout at age 27. He was coming in with a record of 2-3 (2), and Yano was 24 years old and with a record of . Fujii stopped Masutatsu Yano via TKO.
On July 26, 2007 Katsuhisa Fujii faced off against Yuji Sakuragi in a heavyweight bout at age 34. He was coming in with a record of 9-12-1 (6), and Sakuragi was 30 years old and with a record of 8-8 (6). Fujii won the fight via 2-round majority decision.
On October 31, 2000 Katsuhisa Fujii faced off against Johnny Huskey in a heavyweight bout at age 28. He was coming in with a record of 3-4 (3). Fujii stopped Johnny Huskey via submission.
On September 30, 2001 Katsuhisa Fujii faced off against Osami Shibuya in a heavyweight bout at age 29. He was coming in with a record of 5-6-1 (4). Fujii won the fight via 3-round unanimous decision.
On September 29, 2002 Katsuhisa Fujii faced off against Hiroya Takada in a heavyweight bout at age 30. He was coming in with a record of 7-9-1 (5). Fujii won the fight via 3-round majority decision.
On May 23, 2004 Katsuhisa Fujii faced off against Jin O Kim in a heavyweight bout at age 31. He was coming in with a record of 8-9-1 (6). Fujii stopped Jin O Kim via submission.
