USCF player statistics

Mamaradlo, Ildefonso

USCF 12975870CaliforniaUpdated: Nov 2026

Official US Chess record

Gender: Male
FIDE: FIDE 0
US Chess reported rank: #13,800 national · #897 in state
Floor: Regular 1,400 · Quick 1,400 · Blitz 144

US Chess record as of Sep 15, 2026

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Regular rating

1,425-34 since Oct 2026

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

Nov 20261,425 Regular

Compare format

Dec 2025Nov 2026

12 updates in this window · +9 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

-20 Quick vs Regular
Typical for 1,400–1,499 regular players: -85 (middle half -160 to -36, 2,037 established members). This gap is above the typical range.
-43 Blitz vs Regular
Typical for 1,400–1,499 regular players: -195 (middle half -346 to -64, 683 established members). This gap is above the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain: +216; Mar 2026 to Apr 2026
Biggest drop: -92; Feb 2026 to Mar 2026
Longest rise: 2 updates; +221 from Mar 2026 to May 2026
Updates that moved: 9 of 11; Latest -34, Oct 2026 to Nov 2026
Typical move: ±55; Mean absolute change; spread ±85.7

Regular rating in context

Nov 2026 update

United States

#19,868of 83,032 rated members · higher than 76%

63,126 lower · 39 same rating · 19,867 higher · ties share a rank

California

#2,464of 9,288 rated members · higher than 73.4%

6,818 lower · 7 same rating · 2,463 higher · ties share a rank

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 7,061 within 100 points of 1,425 (this player included)

Player · 1,425

01,4252,850

1,400–1,449: 1,880 members (2.2%) · highlighted band is the player’s · dashed line is the target

Target 1,450

77% below 1,450 (63,991 of 83,032; 76% below 1,425)

Percentile over time · United States

76% higher than · Nov 2026 · rank #19,868 of 83,032

Since Dec 2025
+0.3 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 California 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 Mamaradlo, Ildefonso
Month	Regular	Quick	Blitz
Nov 2026	1,425-34	1,405no change	1,382-11
Oct 2026	1,459no change	1,405no change	1,393no change
Sep 2026	1,459-56	1,405+5	1,393no change
Aug 2026	1,515-1	1,400no change	1,393+11
Jul 2026	1,516-40	1,400no change	1,382no change
Jun 2026	1,556-73	1,400-73	1,382no change
May 2026	1,629+5	1,473-79	1,382no change
Apr 2026	1,624+216	1,552+152	1,382no change
Mar 2026	1,408-92	1,400-47	1,382no change
Feb 2026	1,500+84	1,447+47	1,382no change
Jan 2026	1,416no change	1,400no change	1,382no change
Dec 2025	1,416	1,400	1,382

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