Koichi Doi boxer
- bouts
- 4
- won
- 3
- lost
- 1
- draw
- 0
- Status
- inactive
- Division
- light flyweight
- Debut
- 1984-07-21
- Height
- -
- Reach
- -
- Age
- -
- Born
- 1961-02-16
- Death
- -
- Nationality
- Japan
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1984-10-14 | Tomokazu Kiyuna | debut | City Gymnasium, Okinawa | LOST Points |
| 1984-09-20 | Teruaki Sato | L | City Public Hall, Nagoya | WIN Points |
| 1984-08-28 | Yasuichi Ishitani | LL | Suzuyo Gym, Shimizu | WIN Points |
| 1984-07-21 | Hiroyuki Morishige | debut | Kozan Arena, Okazaki | WIN KO |