USCF player statistics

Riordan, Charles

USCF 12611870MassachusettsUpdated: Oct 2026

Official US Chess record

Gender: Male
FIDE title: F
FIDE: FIDE 2020173
TD: Club
Floor: Regular 2,200 · Quick 2,000 · Blitz 100
Rated games: Blitz 20

US Chess record as of Sep 15, 2026

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Regular rating

2,3750 since Sep 2026

Published rating · Oct 2026 · 11 published updates since Dec 2025

Oct 20262,375 Regular

Compare format

Dec 2025Oct 2026

11 updates in this window · 0 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-134 Quick vs Regular
Typical for 2,300–2,399 regular players: -187 (middle half -304 to -104, 198 established members). This gap is within the typical range.
-13 Blitz vs Regular (provisional)
Typical for 2,300–2,399 regular players: -155 (middle half -256 to -63, 162 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: —; No drop between published updates yet
Longest rise: —; No consecutive gains yet
Current run: 10 updates; Unchanged since Dec 2025
Typical move: ±0; Mean absolute change; spread ±0

Regular rating in context

Oct 2026 update

United States

#259of 82,596 rated members · higher than 99.6%

82,336 lower · 2 same rating · 258 higher · ties share a rank

Massachusetts

#13of 1,673 rated members · higher than 99.2%

1,660 lower · 1 same rating · 12 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 400 within 100 points of 2,375 (this player included)

Player · 2,375

01,4502,900

2,350–2,399: 79 members (0%) · highlighted band is the player’s · dashed line is the target

Target 2,400

99.7% below 2,400 (82,368 of 82,596; 99.6% below 2,375)

Percentile over time · United States

99.6% higher than · Oct 2026 · rank #259 of 82,596

Since Dec 2025
0 pts

Dec 2025Oct 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 Oct 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 Massachusetts 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 Riordan, Charles
Month	Regular	Quick	Blitz
Oct 2026	2,375no change	2,241no change	2,362 Pno change · 20 games
Sep 2026	2,375no change	2,241no change	2,362 Pno change · 20 games
Aug 2026	2,375no change	2,241no change	2,362 Pno change · 20 games
Jul 2026	2,375no change	2,241no change	2,362 Pno change · 20 games
Jun 2026	2,375no change	2,241no change	2,362 Pno change · 20 games
May 2026	2,375no change	2,241no change	2,362 Pno change · 20 games
Apr 2026	2,375no change	2,241no change	2,362 Pno change · 20 games
Mar 2026	2,375no change	2,241no change	2,362 Pno change · 20 games
Feb 2026	2,375no change	2,241no change	2,362 Pno change · 20 games
Jan 2026	2,375no change	2,241no change	2,362 Pno change · 20 games
Dec 2025	2,375	2,241	2,362 P20 games

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