Wins
340
Indexed tournament wins
Player record
Nobuhiko Koyama
Losses
319
Indexed tournament losses
Matches
659
Decisive results
Win rate
51.6%
Across indexed matches
Peak rating
1,716
Highest rating in the available history.
Biggest upset
Tan, Carl
2010 JOOLA N. American Teams · Nov 28, 2010 · +303 rating
Open →Biggest loss
Gomez, Ashley
2008 JOOLA American Teams Open · Nov 30, 2008 · -670 rating
Open →Most frequent opponent
Van Dusen, Philip
15 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
73 tournament appearances · synced Aug 9, 2026, 4:22 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Aug 22, 2004 | Matthew J. Murad Memorial OpenTournament · View matches | 1,587 | 1,560 | -27+1 / -28 | 2W / 3L |
| Jun 13, 2004 | Stiga Open on the 2004 Stiga NA TourTournament · View matches | 1,676 | 1,587 | -89+1 / -90 | 3W / 3L |
| May 2, 2004 | Maryland CircuitTournament · View matches · USATT readjusted 1,583 → 1,644 | 1,583 | 1,676 | +32+51 / -19 | 4W / 4L |
| Nov 30, 2003 | North American TeamsTournament · View matches | 1,593 | 1,583 | -10 | 10W / 10L |
| Nov 16, 2003 | PCTTC OpenTournament · View matches | 1,656 | 1,593 | -63+0 / -63 | 4W / 4L |
| Oct 5, 2003 | Maryland CircuitTournament · View matches | 1,607 | 1,656 | +49 | 6W / 1L |
| Aug 24, 2003 | Macy Block OpenTournament · View matches | 1,611 | 1,607 | -4 | 4W / 4L |
| Aug 10, 2003 | Maryland CircuitTournament · View matches | 1,610 | 1,611 | +1+22 / -21 | 5W / 3L |
| Jul 6, 2003 | 2003 U.S. OpenTournament · View matches | 1,611 | 1,610 | -1+24 / -25 | 6W / 7L |
| Jun 15, 2003 | Stiga Open on the 2003 Stiga NTournament · View matches | 1,680 | 1,611 | -69+4 / -73 | 4W / 3L |
| Jun 8, 2003 | Maryland CircuitTournament · View matches | 1,685 | 1,680 | -5+33 / -38 | 7W / 3L |
| Mar 30, 2003 | Quaker city OpenTournament · View matches | 1,688 | 1,685 | -3+12 / -15 | 5W / 3L |
| Feb 9, 2003 | Maryland CircuitTournament · View matches | 1,426 | 1,688 | +262 | 7W / 2L |
| Dec 1, 2002 | Stiga N.A. Teams ChampionshipsTournament · View matches | 1,621 | 1,426 | -195 | 18W / 9L |
| Nov 17, 2002 | Potomac OpenTournament · View matches | 1,630 | 1,621 | -9+4 / -13 | 4W / 3L |
| Oct 20, 2002 | MDTTC October OpenTournament · View matches | 1,678 | 1,630 | -48 | 2W / 4L |
| Sep 22, 2002 | Matthew Murad Mem OpenTournament · View matches | 1,706 | 1,678 | -28 | 3W / 4L |
| Jun 16, 2002 | Stiga Open on the 2002 Stiga NTournament · View matches | 1,553 | 1,706 | +153 | 6W / 3L |
| May 11, 2002 | Maryland Medallion ChampionshipTournament · View matches | 1,562 | 1,553 | -9+2 / -11 | 3W / 6L |
| Mar 3, 2002 | RPI OpenTournament · View matches | 1,585 | 1,562 | -23+0 / -23 | 3W / 6L |