Koji Samejima boxer
- bouts
- 22
- won
- 16
- lost
- 4
- draw
- 2
- Status
- inactive
- Division
- super lightweight
- Debut
- 2000-10-18
- Height
- 5′ 10½″/179cm
- Reach
- -
- Age
- -
- Born
- 1982-04-18
- Death
- -
- Nationality
- Japan
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 2009-07-05 | Daiki Koide | WWWWWW | International Conference Hall, Nagoya | LOST Technical knockout |
| 2009-03-12 | Yusuke Doi | LLLLLL | World Memorial Hall, Kobe | DRAW Points |
| 2008-07-01 | Hiroshi Nakamori | WWWWWL | Korakuen Hall | LOST Unanimous decision |
| 2008-04-28 | So Takenaka | WLWDLL | Prefectural Gymnasium, Osaka | WIN Unanimous decision |
| 2007-08-25 | Randy Suico | WLWLWW | SM Mall of Asia, Pasig City | LOST KO |
| 2006-12-30 | Songnarong Kiatsingnoi | WWLLW | IMP Hall, Osaka | WIN KO |
| 2006-10-08 | Dexter Delada | WWLWLW | IMP Hall, Osaka | WIN KO |
| 2006-05-21 | Denlangoo Tor Tiebkoon | LL | Central Hall, Osaka | WIN KO |
| 2004-09-26 | Hirofumi Hoshihara | LWWWDL | Azalea Taisho, Osaka | WIN |
| 2003-12-14 | Yusuke Doi | WWWWLW | Azalea Taisho, Osaka | LOST |
| 2003-08-10 | Naotoshi Sumitani | WWLL | Azalea Taisho, Osaka | WIN Unanimous decision |
| 2003-03-01 | Satian Sithgorson | L | Abeno Gymnasium, Osaka | DRAW |
| 2002-11-10 | Sadaharu Hironaka | LWD | Prefectural Gymnasium, Osaka | WIN KO |
| 2002-10-06 | Masahiro Toyohara | LLDLWW | Prefectural Gymnasium, Osaka | WIN Unanimous decision |
| 2002-07-21 | Hirofumi Hoshihara | WWDWLW | Azalea Taisho, Osaka | WIN Majority decision |
| 2002-06-02 | Hiroaki Morimoto | debut | Azalea Taisho, Osaka | WIN Unanimous decision |
| 2002-04-28 | Atsushi Kitagawa | LLD | Azalea Taisho, Osaka | WIN Split-decision |
| 2002-02-03 | Ryo Nakanishi | WW | Azalea Taisho, Osaka | WIN Unanimous decision |
| 2001-12-09 | Tomohiro Adachi | LWWL | Azalea Taisho, Osaka | WIN Points |
| 2001-05-28 | Kazuaki Kitagawa | WLDLL | Osaka | WIN Points |
| 2001-02-17 | Yutaka Hosoai | debut | Osaka | WIN KO |
| 2000-10-18 | Nobuaki Kamei | debut | Archaic Hall, Amagasaki | WIN KO |