USCF player statistics

Mederos Diaz, Dennis J

USCF 12938333FloridaUpdated: Nov 2026

Official US Chess record

Gender: Male
FIDE: FIDE 3502872
US Chess reported rank: #3,053 national · #175 in state
Floor: Regular 1,900 · Quick 1,800 · Blitz 109
Rated games: Blitz 23

US Chess record as of Sep 15, 2026

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Regular rating

1,950-17 since Oct 2026

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

Nov 20261,950 Regular

Compare format

Dec 2025Nov 2026

12 updates in this window · -3 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-116 Quick vs Regular
Typical for 1,900–1,999 regular players: -143 (middle half -231 to -83, 1,430 established members). This gap is within the typical range.
+54 Blitz vs Regular (provisional)
Typical for 1,900–1,999 regular players: -222 (middle half -332 to -103, 907 established members). This gap is above the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +9; Sep 2026 to Oct 2026
Biggest drop: -17; Oct 2026 to Nov 2026
Longest rise: 1 update; +9 from Sep 2026 to Oct 2026
Updates that moved: 3 of 11; Latest -17, Oct 2026 to Nov 2026
Typical move: ±3; Mean absolute change; spread ±6.3

Regular rating in context

Nov 2026 update

United States

95%of the comparison population has a lower rating.

78,922 lower · 14 same rating · 4,096 higher

Florida

94.8%of the comparison population has a lower rating.

4,231 lower · 0 same rating · 228 higher

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 3,909 within 100 points of 1,950

Player · 1,950

01,4252,850

1,950–1,999: 798 members (0.9%) · highlighted band is the player’s · dashed line is the target

Target 2,000

96% below 2,000 (79,720 of 83,032; 95% below 1,950)

Percentile over time · United States

95% higher than · Nov 2026 · rank #4,097 of 83,032

Since Dec 2025
-0.1 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: 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 Florida 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 Mederos Diaz, Dennis J
Month	Regular	Quick	Blitz
Nov 2026	1,950-17	1,834-19	2,004 Pno change · 23 games
Oct 2026	1,967+9	1,853+12	2,004 Pno change · 23 games
Sep 2026	1,958no change	1,841no change	2,004 Pno change · 23 games
Aug 2026	1,958no change	1,841no change	2,004 Pno change · 23 games
Jul 2026	1,958no change	1,841no change	2,004 Pno change · 23 games
Jun 2026	1,958no change	1,841no change	2,004 Pno change · 23 games
May 2026	1,958no change	1,841no change	2,004 Pno change · 23 games
Apr 2026	1,958no change	1,841no change	2,004 Pno change · 23 games
Mar 2026	1,958no change	1,841no change	2,004 Pno change · 23 games
Feb 2026	1,958+5	1,841+3	2,004 Pno change · 23 games
Jan 2026	1,953no change	1,838no change	2,004 Pno change · 23 games
Dec 2025	1,953	1,838	2,004 P23 games

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