USCF player statistics

Mu, William Yi

USCF 16781928CaliforniaUpdated: Nov 2026

US Chess membership expired on August 31, 2025. Published rating history is still shown below.

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Rating format

Regular rating

1,1810 since Oct 2026

Published rating · Nov 2026 · 12 published updates since Dec 2025

Nov 20261,181 Regular
Dec 2025: 1182Jan 2026: 1182Feb 2026: 1182Mar 2026: 1182Apr 2026: 1182May 2026: 1182Jun 2026: 1182Jul 2026: 1182Aug 2026: 1182Sep 2026: 1181Oct 2026: 1181Nov 2026: 1181
Dec 2025Nov 2026
12 updates in this window · -1 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity

Other formats against Regular

  • -125 Quick vs Regular

    No national baseline for this rating band yet.

  • -260 Online Quick vs Regular (provisional)

    No national baseline for this rating band yet.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
—
No gain between published updates yet
Biggest drop
-1
Aug 2026 to Sep 2026
Longest rise
—
No consecutive gains yet
Current run
2 updates
Unchanged since Sep 2026
Typical move
±0
Mean absolute change; spread ±0.3

Published ratings by month

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

Monthly USCF ratings for Mu, William Yi
MonthRegularQuickOnline Quick
Nov 20261,181no change1,056no change921 Pno change · 22 games
Oct 20261,181no change1,056no change921 Pno change · 22 games
Sep 20261,181-11,056no change921 Pno change · 22 games
Aug 20261,182no change1,056no change921 Pno change · 22 games
Jul 20261,182no change1,056no change921 Pno change · 22 games
Jun 20261,182no change1,056no change921 Pno change · 22 games
May 20261,182no change1,056no change921 Pno change · 22 games
Apr 20261,182no change1,056no change921 Pno change · 22 games
Mar 20261,182no change1,056no change921 Pno change · 22 games
Feb 20261,182no change1,056no change921 Pno change · 22 games
Jan 20261,182no change1,056no change921 Pno change · 22 games
Dec 20251,1821,056921 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.