Wins
254
Indexed tournament wins
Player record
Guo, Sylvan
Losses
185
Indexed tournament losses
Matches
439
Decisive results
Win rate
57.9%
Across indexed matches
Peak rating
2,213
Highest rating in the available history.
Biggest upset
David Chow
California Open on the 2004 St · Feb 29, 2004 · +589 rating
Open →Biggest loss
Starkey, Marius
San Francisco Summer Open · Aug 21, 2005 · -373 rating
Open →Most frequent opponent
Lily Zhang
13 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
42 tournament appearances · synced Aug 8, 2026, 2:14 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Feb 7, 2004 | Sacramento Winter OpenTournament · View matches | 383 | 407 | +24 | 5W / 1L |
| Oct 19, 2003 | Concord Cup Youth OpenTournament · View matches · Initial rating 383 | Unrated | 383 | — | 3W / 5L |
41–42 of 42
PreviousPage 3 of 3