# Hiroyuki Iwamoto vs Takuya Muguruma

Hiroyuki Iwamoto vs Takuya Muguruma, Nov 28, 1983, Korakuen Hall, Tokyo: Takuya Muguruma won by RTD in round 4 of 10.

## Participants

- Hiroyuki Iwamoto
- [Takuya Muguruma](https://boxerbook.com/boxers/takuya-muguruma-q7678637) (record going in: 14-0-0)

## Result

Takuya Muguruma won (RTD 4/10)

## Key facts

- Date: 1983-11-28
- Venue: Korakuen Hall, Tokyo, 🇯🇵
- Title: Japanese super bantamweight title
- Scheduled rounds: 10
- Method: RTD
- Round: 4
- Status: ✓ one source

## Sources

- [English Wikipedia (b, observed 2026-10-11)](https://en.wikipedia.org/wiki/Takuya_Muguruma_%28boxer%29)
- [Wikipedia (ja) (b, observed 2026-10-12)](https://ja.wikipedia.org/wiki/%E5%85%AD%E8%BB%8A%E5%8D%93%E4%B9%9F)

Canonical URL: <https://boxerbook.com/bouts/67299/hiroyuki-iwamoto-vs-takuya-muguruma>

Updated 2026-10-12