USCF player statistics

Del Castillio, William

USCF 12856372New YorkUpdated: Nov 2026

Official US Chess record

Gender: Male
FIDE: FIDE 3600513
US Chess reported rank: #2,545 national · #295 in state
Floor: Regular 2,000 · Quick 1,800 · Blitz 1,800

US Chess record as of Sep 15, 2026

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Regular rating

2,0000 since Oct 2026

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

Nov 20262,000 Regular

Compare format

Dec 2025Nov 2026

12 updates in this window · -49 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-120 Quick vs Regular
Typical for 2,000–2,099 regular players: -143 (middle half -225 to -83, 1,068 established members). This gap is within the typical range.
-38 Blitz vs Regular
Typical for 2,000–2,099 regular players: -213 (middle half -324 to -106, 717 established members). This gap is above the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: —; No gain between published updates yet
Biggest drop: -47; May 2026 to Jun 2026
Longest rise: —; No consecutive gains yet
Current run: 4 updates; Unchanged since Jul 2026
Typical move: ±4; Mean absolute change; spread ±14.1

Regular rating in context

Nov 2026 update

United States

96%of the comparison population has a lower rating.

79,720 lower · 126 same rating · 3,186 higher

New York

95.7%of the comparison population has a lower rating.

8,734 lower · 15 same rating · 370 higher

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 3,368 within 100 points of 2,000

Player · 2,000

01,4252,850

2,000–2,049: 874 members (1%) · highlighted band is the player’s · dashed line is the target

Target 2,050

97% below 2,050 (80,594 of 83,032; 96% below 2,000)

Percentile over time · United States

96% higher than · Nov 2026 · rank #3,187 of 83,032

Since Dec 2025
-1 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: it is a rating comparison, not a prediction of future rank. This player is outside that comparison population; no membership rank is assigned.

United States statistics New York 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 Del Castillio, William
Month	Regular	Quick	Blitz
Nov 2026	2,000no change	1,880no change	1,962no change
Oct 2026	2,000no change	1,880no change	1,962no change
Sep 2026	2,000no change	1,880no change	1,962no change
Aug 2026	2,000no change	1,880+15	1,962no change
Jul 2026	2,000-2	1,865-16	1,962no change
Jun 2026	2,002-47	1,881-13	1,962no change
May 2026	2,049no change	1,894no change	1,962no change
Apr 2026	2,049no change	1,894no change	1,962no change
Mar 2026	2,049no change	1,894no change	1,962no change
Feb 2026	2,049no change	1,894no change	1,962no change
Jan 2026	2,049no change	1,894no change	1,962no change
Dec 2025	2,049	1,894	1,962

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