USCF player statistics

Keller, Mark

USCF 15468271CaliforniaUpdated: Nov 2026

Official US Chess record

Gender: Male
FIDE: FIDE 0
Floor: Regular 120 · Quick 150 · Blitz 150

US Chess record as of Sep 15, 2026

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Regular rating

8300 since Oct 2026

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

Nov 2026830 Regular

Compare format

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12 updates in this window · 0 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity

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

Other formats against Regular

-108 Quick vs Regular
Typical for 800–899 regular players: -11 (middle half -31 to +8, 2,426 established members). This gap is below the typical range.
-140 Blitz vs Regular
Typical for 800–899 regular players: -103 (middle half -213 to +39, 205 established members). This gap is within 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: 11 updates; Unchanged since Dec 2025
Typical move: ±0; Mean absolute change; spread ±0

Regular rating in context

Nov 2026 update

United States

#42,396of 83,032 rated members · higher than 48.8%

40,597 lower · 40 same rating · 42,395 higher · ties share a rank

California

#4,974of 9,288 rated members · higher than 46.4%

4,311 lower · 4 same rating · 4,973 higher · ties share a rank

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 9,026 within 100 points of 830 (this player included)

Player · 830

01,4252,850

800–849: 2,288 members (2.7%) · highlighted band is the player’s · dashed line is the target

Target 850

49.9% below 850 (41,511 of 83,032; 48.8% below 830)

Percentile over time · United States

48.8% higher than · Nov 2026 · rank #42,396 of 83,032

Since Dec 2025
-0.7 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 California 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 Keller, Mark
Month	Regular	Quick	Blitz
Nov 2026	830no change	722-17	690no change
Oct 2026	830no change	739no change	690no change
Sep 2026	830no change	739no change	690no change
Aug 2026	830no change	739-1	690-2
Jul 2026	830no change	740no change	692no change
Jun 2026	830no change	740no change	692no change
May 2026	830no change	740no change	692no change
Apr 2026	830no change	740+11	692no change
Mar 2026	830no change	729no change	692no change
Feb 2026	830no change	729no change	692no change
Jan 2026	830no change	729-50	692no change
Dec 2025	830	779	692

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