USCF player statistics

Zylstra, Isaac Simon

USCF 12871543MichiganUpdated: Nov 2026

Official US Chess record

Gender: Male
FIDE: FIDE 2096897
US Chess reported rank: #4,824 national · #98 in state
Floor: Regular 1,700 · Quick 1,600 · Blitz 1,700 · Online Quick 100 · Online Blitz 100
Rated games: Online Quick 14 · Online Blitz 25

US Chess record as of Sep 15, 2026

Find USCF-rated tournamentsBrowse upcoming events and entry requirements.

Regular rating

1,8480 since Oct 2026

Published rating · Nov 2026 · 5 published updates since Dec 2025

Nov 20261,848 Regular

Compare format

Dec 2025Nov 2026

5 updates in this window · -43 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-152 Quick vs Regular
Typical for 1,800–1,899 regular players: -129 (middle half -220 to -73, 1,805 established members). This gap is within the typical range.
-70 Blitz vs Regular
Typical for 1,800–1,899 regular players: -208 (middle half -342 to -93, 996 established members). This gap is above the typical range.
-88 Online Quick vs Regular (provisional)
Typical for 1,800–1,899 regular players: -374 (middle half -621 to -197, 269 established members). This gap is above the typical range.
-30 Online Blitz vs Regular
Typical for 1,800–1,899 regular players: -126 (middle half -262 to -30, 232 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: -43; Aug 2026 to Sep 2026
Longest rise: —; No consecutive gains yet
Current run: 2 updates; Unchanged since Sep 2026
Typical move: ±11; Mean absolute change; spread ±21.5

Regular rating in context

Nov 2026 update

United States

#6,362of 83,032 rated members · higher than 92.3%

76,639 lower · 32 same rating · 6,361 higher · ties share a rank

Michigan

#134of 1,912 rated members · higher than 92.9%

1,778 lower · 1 same rating · 133 higher · ties share a rank

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 5,014 within 100 points of 1,848 (this player included)

Player · 1,848

01,4252,850

1,800–1,849: 1,531 members (1.8%) · highlighted band is the player’s · dashed line is the target

Target 1,850

92.3% below 1,850 (76,692 of 83,032; 92.3% below 1,848)

Percentile over time · United States

92.3% higher than · Nov 2026 · rank #6,362 of 83,032

Since Dec 2025
-1 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 Michigan 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 Zylstra, Isaac Simon
Month	Regular	Quick	Blitz	Online Quick	Online Blitz
Nov 2026	1,848no change	1,696no change	1,778no change	1,760 Pno change · 14 games	1,818no change
Oct 2026	1,848no change	1,696no change	1,778no change	1,760 Pno change · 14 games	1,818no change
Sep 2026	1,848-43	1,696-36	1,778-88	1,760 Pno change · 14 games	1,818no change
Aug 2026	1,891no change	1,732no change	1,866no change	1,760 Pno change · 14 games	1,818no change
Dec 2025	1,891	1,732	1,866	1,760 P14 games	1,818

Chess67 DiscordChat with the Chess67 community.Open Find a chess tournamentUpcoming events near you.Browse Find a chess clubClubs and meetups near you.Browse