USCF player statistics

Kostrinsky, Madison

USCF 32489774Updated: Oct 2026

Official US Chess record

Gender: Female
FIDE: FIDE 0
US Chess reported rank: #48,340
Floor: Regular 150 · Quick 150

US Chess record as of Sep 17, 2026

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Regular rating

5300 since Sep 2026

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

Oct 2026530 Regular

Compare format

Dec 2025Oct 2026

11 updates in this window · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-26 Quick vs Regular
Typical for 500–599 regular players: -3 (middle half -12 to +9, 2,124 established members). This gap is below the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +103; Feb 2026 to Mar 2026
Biggest drop: -57; May 2026 to Jun 2026
Longest rise: 2 updates; +135 from Feb 2026 to Apr 2026
Current run: 4 updates; Unchanged since Jun 2026
Typical move: ±19; Mean absolute change; spread ±39.8

Regular rating in context

Oct 2026 update

United States

31.2%of the comparison population has a lower rating.

25,829 lower · 55 same rating · 56,712 higher

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 10,625 within 100 points of 530

Player · 530

01,4502,900

500–549: 2,652 members (3.2%) · highlighted band is the player’s · dashed line is the target

Target 550

32.4% below 550 (26,829 of 82,596; 31.2% below 530)

Percentile over time · United States

31.2% higher than · Oct 2026 · rank #56,713 of 82,596

Since Dec 2025
+4.6 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

Published ratings by month

P marks a provisional rating; the small figure is the change since the previous published observation.

Monthly USCF ratings for Kostrinsky, Madison
Month	Regular	Quick
Oct 2026	530no change	504no change
Sep 2026	530no change	504no change
Aug 2026	530no change	504no change
Jul 2026	530no change	504no change
Jun 2026	530-57	504-60
May 2026	587no change	564no change
Apr 2026	587+32	564+48
Mar 2026	555 P+103 · 22 games	516 P+98 · 22 games
Feb 2026	452 Pno change · 22 games	418 Pno change · 22 games
Jan 2026	452 Pno change · 18 games	418 Pno change · 18 games
Dec 2025	452 P18 games	418 P18 games

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