Koji Isobe boxer
- bouts
- 13
- won
- 5
- lost
- 8
- draw
- 0
- Status
- inactive
- Division
- minimumweight
- Debut
- 2001-09-26
- Height
- -
- Reach
- -
- Age
- -
- Born
- 1979-01-11
- Death
- -
- Nationality
- Japan
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 2009-03-18 | Kosuke Ota | LWWWLW | Korakuen Hall | LOST KO |
| 2008-10-17 | Satoshi Harakawa | LWLLWL | Edogawa Sports Center | WIN Unanimous decision |
| 2007-07-31 | Yoshimitsu Kushibe | WLLLWW | Korakuen Hall | LOST Split-decision |
| 2007-06-04 | Makoto Army Yoshida | DWW | Korakuen Hall | WIN Majority decision |
| 2004-01-16 | Mitsuru Miyake | LWLWW | Korakuen Hall | LOST Unanimous decision |
| 2003-07-03 | Kazuya Sekine | W | Korakuen Hall | LOST Split-decision |
| 2003-05-30 | Tommy Goto | LLWL | Korakuen Hall | WIN Unanimous decision |
| 2002-12-17 | Junpei Ito | WW | Korakuen Hall | LOST KO |
| 2002-09-28 | Masaki Shimura | L | Capio, Tsukuba | WIN Technical knockout |
| 2002-07-01 | Shinichi Takei | L | Korakuen Hall | LOST Unanimous decision |
| 2002-04-23 | Atsushi Higuchi | WWLL | Korakuen Hall | LOST Unanimous decision |
| 2002-02-05 | Kazumasa Ueda | L | Korakuen Hall | WIN Unanimous decision |
| 2001-09-26 | Kyosa Torahiro | WLL | Bunka Gym, Yokohama | LOST Points |