Wins
591
Indexed tournament wins
Player record
Changping Duan
Losses
234
Indexed tournament losses
Matches
825
Decisive results
Win rate
71.6%
Across indexed matches
Peak rating
2,294
Highest rating in the available history.
Biggest upset
Peng Guo
2005 N. American Teams Open Ch · Nov 27, 2005 · +325 rating
Open →Biggest loss
Kaddoura, Fadi
Eastern Open on the 2004 Stiga · Jul 25, 2004 · -281 rating
Open →Most frequent opponent
David Sakai
9 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
107 tournament appearances · synced Aug 8, 2026, 3:34 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Oct 19, 1997 | 1997 Millcreek OpenTournament · View matches | 2,172 | 2,156 | -16+14 / -30 | 9W / 3L |
| Jul 6, 1997 | U.S. OpenTournament · View matches | 2,159 | 2,172 | +13+22 / -9 | 9W / 4L |
| Jun 8, 1997 | Meiklejohn Nat'l Seniors TTTTournament · View matches | 2,160 | 2,159 | -1+13 / -14 | 3W / 3L |
| May 25, 1997 | MdTTC May OpenTournament · View matches | 2,164 | 2,160 | -4 | 6W / 1L |
| Apr 25, 1997 | '97 Penna State ClosedTournament · View matches | 2,135 | 2,164 | +29+29 / 0 | 11W / 1L |
| Apr 20, 1997 | 1997 Millcreek Giant RRTournament · View matches | 2,118 | 2,135 | +17+23 / -6 | 7W / 2L |
| Mar 22, 1997 | Sun TV Canton OpenTournament · View matches | 2,113 | 2,118 | +5+13 / -8 | 8W / 2L |
| Jan 19, 1997 | Cleveland Winter OpenTournament · View matches | 2,104 | 2,113 | +9+9 / 0 | 5W / 2L |
| Dec 1, 1996 | U.S. Open Team ChampionshipsTournament · View matches | 2,171 | 2,104 | -67+42 / -109 | 8W / 7L |
| Nov 17, 1996 | MATTC November OpenTournament · View matches | 2,159 | 2,171 | +12+12 / 0 | 8W / 2L |
| Nov 3, 1996 | 1996 Millcreek OpenTournament · View matches | 2,155 | 2,159 | +4+12 / -8 | 10W / 2L |
| Sep 15, 1996 | NTTC September OpenTournament · View matches | 2,185 | 2,155 | -30+2 / -32 | 3W / 4L |
| Aug 18, 1996 | 1996 Sun TV OpenTournament · View matches | 2,188 | 2,185 | -3 | 6W / 2L |
| Jul 7, 1996 | 1996 US OpenTournament · View matches | 2,203 | 2,188 | -15+15 / -30 | 8W / 2L |
| Jun 16, 1996 | Maryland CircuitTournament · View matches | 2,224 | 2,203 | -21+0 / -21 | 5W / 2L |
| Apr 21, 1996 | '96 Penna State Championship CTournament · View matches | 2,141 | 2,224 | +83 | 10W / 3L |
| Apr 14, 1996 | 1996 Millcreek Giant RRTournament · View matches | 2,115 | 2,141 | +26+40 / -14 | 4W / 3L |
| Mar 17, 1996 | NTTC March OpenTournament · View matches | 2,101 | 2,115 | +14+25 / -11 | 4W / 2L |
| Feb 25, 1996 | 3rd Annual Newark Sun TV OpenTournament · View matches | 2,101 | 2,101 | 0+3 / -3 | 2W / 1L |
| Feb 18, 1996 | NTTC Feb OpenTournament · View matches | 2,108 | 2,101 | -7+16 / -23 | 8W / 2L |