USCF player statistics

Montemayor, Isaak

USCF 30662623South DakotaUpdated: Oct 2026

Official US Chess record

Gender: Male
FIDE: FIDE 39967450
US Chess reported rank: #5,617 national · #11 in state
Floor: Regular 1,600 · Blitz 1,500

US Chess record as of Sep 15, 2026

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Regular rating

1,8060 since Sep 2026

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

Oct 20261,806 Regular

Compare format

Dec 2025Oct 2026

11 updates in this window · +73 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-7 Blitz vs Regular
Typical for 1,800–1,899 regular players: -213 (middle half -343 to -99, 1,009 established members). This gap is above the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +73; Aug 2026 to Sep 2026
Biggest drop: —; No drop between published updates yet
Longest rise: 1 update; +73 from Aug 2026 to Sep 2026
Current run: 1 update; Unchanged since Sep 2026
Typical move: ±7; Mean absolute change; spread ±23.1

Regular rating in context

Oct 2026 update

United States

#7,402of 82,596 rated members · higher than 90.9%

75,153 lower · 42 same rating · 7,401 higher · ties share a rank

South Dakota

#13of 172 rated members · higher than 92.4%

159 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 · 5,388 within 100 points of 1,806 (this player included)

Player · 1,806

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; 90.9% below 1,806)

Percentile over time · United States

90.9% higher than · Oct 2026 · rank #7,402 of 82,596

Since Dec 2025
+2.5 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 South Dakota 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 Montemayor, Isaak
Month	Regular	Blitz
Oct 2026	1,806no change	1,799no change
Sep 2026	1,806+73	1,799+236
Aug 2026	1,733no change	1,563no change
Jul 2026	1,733no change	1,563no change
Jun 2026	1,733no change	1,563no change
May 2026	1,733no change	1,563no change
Apr 2026	1,733no change	1,563no change
Mar 2026	1,733no change	1,563no change
Feb 2026	1,733no change	1,563no change
Jan 2026	1,733no change	1,563no change
Dec 2025	1,733	1,563

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