Wins
350
Indexed tournament wins
Player record
Hiroshi Koshimoto
Losses
981
Indexed tournament losses
Matches
1,331
Decisive results
Win rate
26.3%
Across indexed matches
Peak rating
1,672
Highest rating in the available history.
Biggest upset
Rowe, Larry
US Nationals · Dec 18, 1994 · +662 rating
Open →Biggest loss
Trudell, Robert
Colorado River Open · Mar 28, 1999 · -658 rating
Open →Most frequent opponent
Al Miller
9 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
113 tournament appearances · synced Aug 8, 2026, 3:34 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| May 7, 2000 | San Diego Spring OpenTournament · View matches | 1,545 | 1,547 | +2+81 / -79 | 5W / 13L |
| Feb 6, 2000 | Golden Western States OpenTournament · View matches · USATT readjusted 1,459 → 1,517 | 1,459 | 1,545 | +28+46 / -18 | 6W / 8L |
| Dec 19, 1999 | US NationalsTournament · View matches | 1,572 | 1,459 | -113+18 / -131 | 6W / 13L |
| Dec 11, 1999 | 1999 4th Annual US Nationals WTournament · View matches · USATT readjusted 1,489 → 1,544 | 1,489 | 1,572 | +28+36 / -8 | 2W / 6L |
| Oct 3, 1999 | San Diego 40th Anniversary OpeTournament · View matches | 1,558 | 1,489 | -69 | 3W / 12L |
| Sep 19, 1999 | Lake Havasu OpenTournament · View matches | 1,582 | 1,558 | -24 | 3W / 10L |
| Jul 4, 1999 | 1999 US OpenTournament · View matches | 1,454 | 1,582 | +128 | 9W / 9L |
| Jun 27, 1999 | California State OpenTournament · View matches | 1,502 | 1,454 | -48 | 1W / 7L |
| Jun 13, 1999 | Meiklejohn National Seniors TTTournament · View matches | 1,502 | 1,502 | 0+20 / -20 | 1W / 5L |
| Apr 11, 1999 | 1999 Los Angeles TT Open ChampTournament · View matches | 1,511 | 1,502 | -9 | 0W / 3L |
| Mar 28, 1999 | Colorado River OpenTournament · View matches | 1,503 | 1,511 | +8 | 4W / 9L |
| Feb 14, 1999 | Golden Western States OpenTournament · View matches | 1,470 | 1,503 | +33 | 3W / 8L |
| Dec 20, 1998 | 1998 USATT NationalsTournament · View matches | 1,413 | 1,470 | +57+75 / -18 | 2W / 11L |
| Dec 13, 1998 | Loma Linda 3rd Annual Stiga WaTournament · View matches | 1,414 | 1,413 | -1+0 / -1 | 0W / 4L |
| Nov 15, 1998 | San Diego Fall OpenTournament · View matches | 1,499 | 1,414 | -85 | 0W / 14L |
| Sep 13, 1998 | 1998 Pacific Coast OpenTournament · View matches | 1,537 | 1,499 | -38+0 / -38 | 0W / 9L |
| Aug 30, 1998 | AGBU TTTTournament · View matches | 1,542 | 1,537 | -5+35 / -40 | 1W / 5L |
| Jul 5, 1998 | 1998 US OpenTournament · View matches | 1,629 | 1,542 | -87+7 / -94 | 3W / 9L |
| Jun 21, 1998 | California State OpenTournament · View matches · USATT readjusted 1,358 → 1,592 | 1,358 | 1,629 | +37+68 / -31 | 9W / 9L |
| Jun 14, 1998 | Mieklejohn SeniorsTournament · View matches | 1,404 | 1,358 | -46+0 / -46 | 1W / 6L |