USCF player statistics

Olafsson, William Thor

USCF 15498327IllinoisUpdated: Nov 2026

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

Join / Renew USCF
Official US Chess record

Enter an 8-digit USCF ID, or at least 3 letters of a name. Similar names in IL appear first.

Find USCF-rated tournamentsBrowse upcoming events and entry requirements.
Rating format

Regular rating

1,4950 since Oct 2026

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

Nov 20261,495 Regular
Dec 2025: 1495Jan 2026: 1495Feb 2026: 1495Mar 2026: 1495Apr 2026: 1495May 2026: 1495Jun 2026: 1495Jul 2026: 1495Aug 2026: 1495Sep 2026: 1495Oct 2026: 1495Nov 2026: 1495
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12 updates in this window · 0 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

  • -172 Quick vs Regular

    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 Olafsson, William Thor
MonthRegularQuick
Nov 20261,495no change1,323no change
Oct 20261,495no change1,323no change
Sep 20261,495no change1,323no change
Aug 20261,495no change1,323no change
Jul 20261,495no change1,323no change
Jun 20261,495no change1,323no change
May 20261,495no change1,323no change
Apr 20261,495no change1,323no change
Mar 20261,495no change1,323no change
Feb 20261,495no change1,323no change
Jan 20261,495no change1,323no change
Dec 20251,4951,323
Chess67 DiscordChat with the Chess67 community.Open Find a chess tournamentUpcoming events near you.Browse Find a chess clubClubs and meetups near you.Browse

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.