Wins
340
Indexed tournament wins
Player record
Koyama, Nobuhiko
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
Philip Van Dusen
15 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
73 tournament appearances · synced Aug 10, 2026, 2:19 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Jan 19, 2002 | Maryland Giant RRTournament · View matches | 1,595 | 1,585 | -10+29 / -39 | 2W / 4L |
| Dec 15, 2001 | Star City InvitationalTournament · View matches | 1,571 | 1,595 | +24+33 / -9 | 2W / 6L |
| Nov 25, 2001 | 2001 Stiga No. American TeamsTournament · View matches | 1,592 | 1,571 | -21+27 / -48 | 22W / 2L |
| Sep 30, 2001 | Stiga Open on the 2001 Stiga NTournament · View matches | 1,600 | 1,592 | -8 | 4W / 7L |
| Jul 22, 2001 | Eastern Open on the 2001 NA ToTournament · View matches | 1,613 | 1,600 | -13+7 / -20 | 4W / 8L |
| Jul 15, 2001 | Maryland July CircuitTournament · View matches | 1,584 | 1,613 | +29 | 5W / 4L |
| Jun 17, 2001 | Matthew Murad Memorial Open - Tournament · View matches | 1,562 | 1,584 | +22+26 / -4 | 4W / 5L |
| Jun 9, 2001 | Maryland June CircuitTournament · View matches | 1,568 | 1,562 | -6 | 6W / 5L |
| Apr 1, 2001 | Rensselaer Polytechnic InstituTournament · View matches | 1,598 | 1,568 | -30 | 5W / 7L |
| Mar 11, 2001 | Maryland March Circuit - CloseTournament · View matches | 1,568 | 1,598 | +30 | 6W / 4L |
| Feb 24, 2001 | Maryland Feb. Circuit Giant RRTournament · View matches | 1,567 | 1,568 | +1 | 6W / 2L |
| Nov 26, 2000 | No. Amer. Teams Open ChampionshipsTournament · View matches | 1,520 | 1,567 | +47 | 10W / 9L |
| Sep 10, 2000 | Maryland Sept CircuitTournament · View matches | 1,519 | 1,520 | +1 | 2W / 4L |
| Aug 20, 2000 | Matthew Murad Memorial Open oTournament · View matches | 1,497 | 1,519 | +22 | 8W / 3L |
| Jul 22, 2000 | Maryland July Circuit TeamsTournament · View matches | 1,491 | 1,497 | +6+12 / -6 | 5W / 3L |
| Jul 9, 2000 | Maryland July CircuitTournament · View matches | 1,502 | 1,491 | -11+38 / -49 | 3W / 5L |
| Jun 24, 2000 | Maryland June Circuit TeamsTournament · View matches | 1,489 | 1,502 | +13+16 / -3 | 6W / 2L |
| Jun 11, 2000 | Maryland June CircuitTournament · View matches | 1,433 | 1,489 | +56 | 3W / 6L |
| May 14, 2000 | Eastern Open on the No. Amer TourTournament · View matches | 1,479 | 1,433 | -46+3 / -49 | 2W / 4L |
| Apr 2, 2000 | MDTTC April OpenTournament · View matches | 1,498 | 1,479 | -19+6 / -25 | 5W / 3L |