USCF player statistics

Clark, Lydia Isobel

USCF 16318051IdahoUpdated: Nov 2026

US Chess membership expired on March 31, 2026. Published rating history is still shown below.

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Rating format

Regular rating

3990 since Oct 2026

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

Nov 2026399 Regular
Dec 2025: 399Jan 2026: 399Feb 2026: 399Mar 2026: 399Apr 2026: 399May 2026: 399Jun 2026: 399Jul 2026: 399Aug 2026: 399Sep 2026: 399Oct 2026: 399Nov 2026: 399
Dec 2025Nov 2026
12 updates in this window · 0 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity

Other formats against Regular

  • -14 Quick vs Regular

    No national baseline for this rating band yet.

  • -27 Blitz 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
—
No drop between published updates yet
Longest rise
—
No consecutive gains yet
Current run
11 updates
Unchanged since Dec 2025
Typical move
±0
Mean absolute change; spread ±0

Published ratings by month

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

Monthly USCF ratings for Clark, Lydia Isobel
MonthRegularQuickBlitz
Nov 2026399no change385no change372 Pno change · 22 games
Oct 2026399no change385no change372 Pno change · 22 games
Sep 2026399no change385no change372 Pno change · 22 games
Aug 2026399no change385no change372 Pno change · 22 games
Jul 2026399no change385no change372 Pno change · 22 games
Jun 2026399no change385no change372 Pno change · 22 games
May 2026399no change385no change372 Pno change · 22 games
Apr 2026399no change385no change372 Pno change · 22 games
Mar 2026399no change385no change372 Pno change · 22 games
Feb 2026399no change385no change372 Pno change · 22 games
Jan 2026399no change385no change372 Pno change · 22 games
Dec 2025399385372 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.