USCF player statistics

Couvillion, Zachary

USCF 15473856MississippiUpdated: Nov 2026

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

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Rating format

Regular rating

1,9790 since Oct 2026

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

Nov 20261,979 Regular
Dec 2025: 1963Jan 2026: 1962Feb 2026: 1962Mar 2026: 1962Apr 2026: 1975May 2026: 1979Jun 2026: 1979Jul 2026: 1979Aug 2026: 1979Sep 2026: 1979Oct 2026: 1979Nov 2026: 1979
Dec 2025Nov 2026
12 updates in this window · +16 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity

Other formats against Regular

  • -231 Quick vs Regular

    No national baseline for this rating band yet.

  • -511 Blitz vs Regular

    No national baseline for this rating band yet.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+13
Mar 2026 to Apr 2026
Biggest drop
-1
Dec 2025 to Jan 2026
Longest rise
2 updates
+17 from Mar 2026 to May 2026
Current run
6 updates
Unchanged since May 2026
Typical move
±2
Mean absolute change; spread ±4

Published ratings by month

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

Monthly USCF ratings for Couvillion, Zachary
MonthRegularQuickBlitz
Nov 20261,979no change1,748no change1,468no change
Oct 20261,979no change1,748no change1,468no change
Sep 20261,979no change1,748-11,468no change
Aug 20261,979no change1,749+11,468no change
Jul 20261,979no change1,748no change1,468no change
Jun 20261,979no change1,748no change1,468no change
May 20261,979+41,748+51,468no change
Apr 20261,975+131,743+561,468no change
Mar 20261,962no change1,687no change1,468no change
Feb 20261,962no change1,687no change1,468no change
Jan 20261,962-11,687+111,468no change
Dec 20251,9631,6761,468
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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.