Tetsuo Katsuta has five losses against five opponents on his MMA record. For a list of Katsuta's best fights, refer to "Best fights of Tetsuo Katsuta".
On January 24, 2004 Tetsuo Katsuta faced off against Makoto Ishikawa in a lightweight bout at age 25. He was coming in with a record of 7-5-2 (2), and Ishikawa was 29 years old and with a record of 8-5-1 (2). Katsuta lost the fight via 3-round unanimous decision.
On September 16, 2002 Tetsuo Katsuta faced off against Norifumi Yamamoto in a lightweight bout at age 24. He was coming in with a record of 6-4-1 (2), and Yamamoto was 25 years old and with a record of 3-1 (2). Katsuta lost the fight via 1st-round TKO.
On September 2, 2001 Tetsuo Katsuta fought Alexandre Franca Nogueira in a lightweight title fight for Nogueira's Shooto Championship title. Katsuta was 23 years old and with a record of 6-3 (2), and Nogueira was 23 years old and with a record of 6-1-1 (3). Katsuta lost the fight via 2nd-round submission.
On December 7, 1999 Tetsuo Katsuta faced off against Anthony Hamlett at age 21. He was coming in with a record of 1-2 (1), and Hamlett was 26 years old and with a record of 2-0 (2). Katsuta lost the fight via 2-round majority decision.
On April 9, 1999 Tetsuo Katsuta faced off against Katsuya Toida at age 21. He was coming in with a record of 0-1 (0), and Toida was 22 years old and with a record of 0-1 (0). Katsuta lost the fight via 2-round unanimous decision.
