USCF player statistics

Mack, Sydney Estelle

USCF 16837992District of ColumbiaUpdated: Nov 2026

Official US Chess record

Gender: Male
FIDE: FIDE 39928772
US Chess reported rank: #25,638 national · #102 in state
Floor: Regular 150 · Quick 150 · Blitz 107 · Online Regular 100
Rated games: Blitz 15 · Online Regular 16

US Chess record as of Sep 15, 2026

Find USCF-rated tournamentsBrowse upcoming events and entry requirements.

Regular rating

1,0550 since Oct 2026

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

Nov 20261,055 Regular

Compare format

Dec 2025Nov 2026

12 updates in this window · +230 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-69 Quick vs Regular
Typical for 1,000–1,099 regular players: -25 (middle half -60 to -1, 2,209 established members). This gap is below the typical range.
-74 Blitz vs Regular (provisional)
Typical for 1,000–1,099 regular players: -120 (middle half -245 to -5, 317 established members). This gap is within the typical range.
-149 Online Regular vs Regular (provisional)
Typical for 1,000–1,099 regular players: -130 (middle half -318 to +30, 133 established members). This gap is within the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +116; Apr 2026 to May 2026
Biggest drop: —; No drop between published updates yet
Longest rise: 2 updates; +230 from Mar 2026 to May 2026
Current run: 6 updates; Unchanged since May 2026
Typical move: ±21; Mean absolute change; spread ±46.5

Regular rating in context

Nov 2026 update

United States

#33,027of 83,032 rated members · higher than 60.1%

49,971 lower · 35 same rating · 33,026 higher · ties share a rank

District of Columbia

#116of 338 rated members · higher than 65.6%

222 lower · 1 same rating · 115 higher · ties share a rank

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 7,656 within 100 points of 1,055 (this player included)

Player · 1,055

01,4252,850

1,050–1,099: 1,893 members (2.2%) · highlighted band is the player’s · dashed line is the target

Target 1,100

62.2% below 1,100 (51,669 of 83,032; 60.1% below 1,055)

Percentile over time · United States

60.1% higher than · Nov 2026 · rank #33,027 of 83,032

Since Dec 2025
+10.8 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 District of Columbia 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 Mack, Sydney Estelle
Month	Regular	Quick	Blitz	Online Regular
Nov 2026	1,055no change	986no change	981 Pno change · 15 games	906 Pno change · 16 games
Oct 2026	1,055no change	986no change	981 Pno change · 15 games	906 Pno change · 16 games
Sep 2026	1,055no change	986no change	981 Pno change · 15 games	906 Pno change · 16 games
Aug 2026	1,055no change	986no change	981 Pno change · 15 games	906 Pno change · 16 games
Jul 2026	1,055no change	986no change	981 Pno change · 15 games	906 Pno change · 16 games
Jun 2026	1,055no change	986no change	981 Pno change · 15 games	906 Pno change · 16 games
May 2026	1,055+116	986+142	981 Pno change · 15 games	906 Pno change · 16 games
Apr 2026	939+114	844+132	981 Pno change · 15 games	906 Pno change · 16 games
Mar 2026	825no change	712no change	981 Pno change · 15 games	906 Pno change · 16 games
Feb 2026	825no change	712no change	981 Pno change · 15 games	906 Pno change · 16 games
Jan 2026	825no change	712no change	981 Pno change · 15 games	906 Pno change · 16 games
Dec 2025	825	712	981 P15 games	906 P16 games

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