USCF player statistics

Polstein, Harold M

USCF 10098980CaliforniaUpdated: Oct 2026

Official US Chess record

Gender: Male
Floor: Regular 1,600

US Chess record as of Sep 14, 2026

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Regular rating

1,8310 since Sep 2026

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

Oct 20261,831 Regular

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11 updates in this window · 0 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

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

91.8%of the comparison population has a lower rating.

75,853 lower · 26 same rating · 6,717 higher

California

89.8%of the comparison population has a lower rating.

8,157 lower · 7 same rating · 919 higher

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 5,138 within 100 points of 1,831

Player · 1,831

01,4502,900

1,800–1,849: 1,584 members (1.9%) · highlighted band is the player’s · dashed line is the target

Target 1,850

92.4% below 1,850 (76,326 of 82,596; 91.8% below 1,831)

Percentile over time · United States

91.8% higher than · Oct 2026 · rank #6,718 of 82,596

Since Dec 2025
+0.1 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: 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 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 Polstein, Harold M
Month	Regular
Oct 2026	1,831no change
Sep 2026	1,831no change
Aug 2026	1,831no change
Jul 2026	1,831no change
Jun 2026	1,831no change
May 2026	1,831no change
Apr 2026	1,831no change
Mar 2026	1,831no change
Feb 2026	1,831no change
Jan 2026	1,831no change
Dec 2025	1,831

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