USCF player statistics

Kaplan, William Ervin

USCF 16937194MaineUpdated: Nov 2026

Official US Chess record

Gender: Male
Floor: Regular 149 · Quick 149 · Blitz 100 · Online Regular 100 · Online Quick 100
Rated games: Blitz 17 · Online Regular 13 · Online Quick 14

US Chess record as of Sep 15, 2026

Find USCF-rated tournamentsBrowse upcoming events and entry requirements.

Regular rating

5640 since Oct 2026

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

Nov 2026564 Regular

Compare format

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12 updates in this window · +1 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity

Compare with another playerOverlays their published ratings on the chart; the link keeps the comparison.

Other formats against Regular

-6 Quick vs Regular
Typical for 500–599 regular players: -3 (middle half -12 to +8, 2,095 established members). This gap is within the typical range.
-391 Blitz vs Regular (provisional)
Typical for 500–599 regular players: -36 (middle half -135 to +86, 70 established members). This gap is below the typical range.
-65 Online Regular vs Regular (provisional)
No national baseline for this rating band yet.
-179 Online Quick vs Regular (provisional)
Typical for 500–599 regular players: +239 (middle half -52 to +434, 32 established members). This gap is below the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +1; Jul 2026 to Aug 2026
Biggest drop: —; No drop between published updates yet
Longest rise: 1 update; +1 from Jul 2026 to Aug 2026
Current run: 3 updates; Unchanged since Aug 2026
Typical move: ±0; Mean absolute change; spread ±0.3

Regular rating in context

Nov 2026 update

United States

#55,328of 83,032 rated members · higher than 33.3%

27,661 lower · 44 same rating · 55,327 higher · ties share a rank

Maine

#248of 403 rated members · higher than 38.4%

155 lower · 1 same rating · 247 higher · ties share a rank

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 10,501 within 100 points of 564 (this player included)

Player · 564

01,4252,850

550–599: 2,600 members (3.1%) · highlighted band is the player’s · dashed line is the target

Target 600

35.5% below 600 (29,497 of 83,032; 33.3% below 564)

Percentile over time · United States

33.3% higher than · Nov 2026 · rank #55,328 of 83,032

Since Dec 2025
-0.4 pts

Dec 2025Nov 2026

Each month against that month’s active pool, so pool growth and rating drift both count.

How these comparisons are calculated

Chess67 calculations from the Nov 2026 monthly rating update, using the same population as the USCF statistics pages: US members classified as active in the published monthly records, excluding lifetime-coded records, provisional ratings included. Ties share a rank; “lower” is strictly lower; national and state groups overlap. The target explorer keeps the population fixed, with this player at their recorded rating: it is a rating comparison, not a prediction of future rank.

United States statistics Maine statistics

Published ratings by month

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

Monthly USCF ratings for Kaplan, William Ervin
Month	Regular	Quick	Blitz	Online Regular	Online Quick
Nov 2026	564no change	558no change	173 Pno change · 17 games	499 Pno change · 13 games	385 Pno change · 14 games
Oct 2026	564no change	558no change	173 Pno change · 17 games	499 Pno change · 13 games	385 Pno change · 14 games
Sep 2026	564no change	558no change	173 Pno change · 17 games	499 Pno change · 13 games	385 Pno change · 14 games
Aug 2026	564+1	558no change	173 Pno change · 17 games	499 Pno change · 13 games	385 Pno change · 14 games
Jul 2026	563no change	558no change	173 Pno change · 17 games	499 Pno change · 13 games	385 Pno change · 14 games
Jun 2026	563no change	558no change	173 Pno change · 17 games	499 Pno change · 13 games	385 Pno change · 14 games
May 2026	563no change	558no change	173 Pno change · 17 games	499 Pno change · 13 games	385 Pno change · 14 games
Apr 2026	563no change	558no change	173 Pno change · 17 games	499 Pno change · 13 games	385 Pno change · 14 games
Mar 2026	563no change	558no change	173 Pno change · 17 games	499 Pno change · 13 games	385 Pno change · 14 games
Feb 2026	563no change	558no change	173 Pno change · 17 games	499 Pno change · 13 games	385 Pno change · 14 games
Jan 2026	563no change	558no change	173 Pno change · 17 games	499 Pno change · 13 games	385 Pno change · 14 games
Dec 2025	563	558	173 P17 games	499 P13 games	385 P14 games

Chess67 DiscordChat with the Chess67 community.Open Find a chess tournamentUpcoming events near you.Browse Find a chess clubClubs and meetups near you.Browse