USCF player statistics

Calderon, Zachary T

USCF 12929219MassachusettsUpdated: Nov 2026
Official US Chess record

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Gender
Male
FIDE
FIDE 2076969
US Chess reported rank
#1,861 national · #64 in state
Floor
Regular 2,000 · Quick 1,900 · Blitz 1,800 · Online Quick 100 · Online Blitz 100
Rated games
Online Quick 15 · Online Blitz 22

US Chess record as of Sep 15, 2026

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Rating format

Regular rating

2,0390 since Oct 2026

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

Nov 20262,039 Regular
Dec 2025: 2127Jan 2026: 2127Feb 2026: 2127Mar 2026: 2127Apr 2026: 2127May 2026: 2127Jun 2026: 2127Jul 2026: 2108Aug 2026: 2091Sep 2026: 2060Oct 2026: 2039Nov 2026: 2039
Dec 2025Nov 2026
12 updates in this window · -88 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity
Overlays their published ratings on the chart; the link keeps the comparison.

Other formats against Regular

  • -139 Quick vs Regular

    Typical for 2,000–2,099 regular players: -143 (middle half -225 to -83, 1,068 established members). This gap is within the typical range.

  • -78 Blitz vs Regular

    Typical for 2,000–2,099 regular players: -213 (middle half -324 to -106, 717 established members). This gap is above the typical range.

  • +58 Online Quick vs Regular (provisional)

    Typical for 2,000–2,099 regular players: -438 (middle half -673 to -256, 237 established members). This gap is above the typical range.

  • -63 Online Blitz vs Regular (provisional)

    Typical for 2,000–2,099 regular players: -205 (middle half -330 to -111, 221 established members). This gap is above the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
—
No gain between published updates yet
Biggest drop
-31
Aug 2026 to Sep 2026
Longest rise
—
No consecutive gains yet
Current run
1 update
Unchanged since Oct 2026
Typical move
±8
Mean absolute change; spread ±11.6

Regular rating in context

Nov 2026 update

United States

#2,558of 83,032 rated members · higher than 96.8%

80,457 lower · 18 same rating · 2,557 higher · ties share a rank

Massachusetts

#92of 1,698 rated members · higher than 94.5%

1,606 lower · 1 same rating · 91 higher · ties share a rank

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 2,778 within 100 points of 2,039 (this player included)

Player · 2,039
01,4252,850

2,000–2,049: 874 members (1%) · highlighted band is the player’s · dashed line is the target

97% below 2,050 (80,594 of 83,032; 96.8% below 2,039)

Percentile over time · United States

96.8% higher than · Nov 2026 · rank #2,558 of 83,032

Since Dec 2025
-1.2 pts

Dec 2025: higher than 98% (rank 1,584 of 81,102)Jan 2026: higher than 98% (rank 1,567 of 79,487)Feb 2026: higher than 98% (rank 1,626 of 83,940)Mar 2026: higher than 98% (rank 1,576 of 80,605)Apr 2026: higher than 98% (rank 1,568 of 80,831)May 2026: higher than 98% (rank 1,575 of 81,236)Jun 2026: higher than 98% (rank 1,578 of 83,290)Jul 2026: higher than 97.8% (rank 1,740 of 82,736)Aug 2026: higher than 97.6% (rank 1,908 of 83,080)Sep 2026: higher than 97.2% (rank 2,262 of 83,635)Oct 2026: higher than 96.9% (rank 2,532 of 82,596)Nov 2026: higher than 96.8% (rank 2,558 of 83,032)
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 Massachusetts 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 Calderon, Zachary T
MonthRegularQuickBlitzOnline QuickOnline Blitz
Nov 20262,039no change1,900-111,961no change2,097 Pno change · 15 games1,976 Pno change · 22 games
Oct 20262,039-211,911no change1,961no change2,097 Pno change · 15 games1,976 Pno change · 22 games
Sep 20262,060-311,911-131,961-152,097 Pno change · 15 games1,976 Pno change · 22 games
Aug 20262,091-171,924-161,976-82,097 Pno change · 15 games1,976 Pno change · 22 games
Jul 20262,108-191,940-261,984no change2,097 Pno change · 15 games1,976 Pno change · 22 games
Jun 20262,127no change1,966no change1,984no change2,097 Pno change · 15 games1,976 Pno change · 22 games
May 20262,127no change1,966no change1,984no change2,097 Pno change · 15 games1,976 Pno change · 22 games
Apr 20262,127no change1,966no change1,984no change2,097 Pno change · 15 games1,976 Pno change · 22 games
Mar 20262,127no change1,966no change1,984no change2,097 Pno change · 15 games1,976 Pno change · 22 games
Feb 20262,127no change1,966no change1,984no change2,097 Pno change · 15 games1,976 Pno change · 22 games
Jan 20262,127no change1,966no change1,984no change2,097 Pno change · 15 games1,976 Pno change · 22 games
Dec 20252,1271,9661,9842,097 P15 games1,976 P22 games
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About these statistics. Built from the monthly USCF rating updates available to Chess67. Ratings change between publications, and a missing month is not inactivity. The official US Chess record has current ratings and tournament history.