USCF player statistics

Chan, William

USCF 31440567New YorkUpdated: Oct 2026

US Chess membership expired on September 30, 2026. Published rating history is still shown below.

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Rating format

Regular rating

1,670-9 since Sep 2026

Published rating · Oct 2026 · 11 published updates since Dec 2025

Oct 20261,670 Regular
Dec 2025: 1586Jan 2026: 1624Feb 2026: 1588Mar 2026: 1631Apr 2026: 1635May 2026: 1730Jun 2026: 1690Jul 2026: 1662Aug 2026: 1676Sep 2026: 1679Oct 2026: 1670
Dec 2025Oct 2026
11 updates in this window · +84 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity

Other formats against Regular

  • -156 Quick vs Regular

    No national baseline for this rating band yet.

  • -441 Blitz vs Regular

    No national baseline for this rating band yet.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+95
Apr 2026 to May 2026
Biggest drop
-40
May 2026 to Jun 2026
Longest rise
3 updates
+142 from Feb 2026 to May 2026
Updates that moved
10 of 10
Latest -9, Sep 2026 to Oct 2026
Typical move
±31
Mean absolute change; spread ±41.6

Published ratings by month

P marks a provisional rating; the small figure is the change since the previous published observation.

Monthly USCF ratings for Chan, William
MonthRegularQuickBlitz
Oct 20261,670-91,514+31,229no change
Sep 20261,679+31,511-201,229no change
Aug 20261,676+141,531+601,229+80
Jul 20261,662-281,471-171,149 Pno change · 22 games
Jun 20261,690-401,488-61,149 Pno change · 22 games
May 20261,730+951,494no change1,149 Pno change · 22 games
Apr 20261,635+41,494-261,149 Pno change · 22 games
Mar 20261,631+431,520+181,149 Pno change · 22 games
Feb 20261,588-361,502-641,149 Pno change · 22 games
Jan 20261,624+381,566+471,149 Pno change · 22 games
Dec 20251,5861,5191,149 P22 games
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About these statistics. Built from the monthly USCF rating updates available to Chess67. Ratings change between publications, and a missing month is not inactivity. The official US Chess record has current ratings and tournament history.