USCF player statistics

Rivera, Efrain Omar

USCF 33197950North CarolinaUpdated: Nov 2026

Official US Chess record

Gender: Male
US Chess reported rank: #24,141 national · #922 in state
Floor: Regular 143 · Quick 134
Rated games: Regular 11 · Quick 6

US Chess record as of Sep 18, 2026

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Regular rating

1,077

Provisional rating · Nov 2026 · 3 published updates since Sep 2026

Nov 20261,077 provisional

Compare format

Sep 2026Nov 2026

3 updates in this window · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

+75 Quick vs Regular (provisional)
Typical for 1,000–1,099 regular players: -25 (middle half -60 to -1, 2,209 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: -24; Sep 2026 to Oct 2026
Longest rise: —; No consecutive gains yet
Current run: 1 update; Unchanged since Oct 2026
Typical move: ±12; Mean absolute change; spread ±17

Regular rating in context

Nov 2026 update

United States

#32,207of 83,032 rated members · higher than 61.1%

50,783 lower · 43 same rating · 32,206 higher · ties share a rank

North Carolina

#1,215of 2,787 rated members · higher than 56.4%

1,572 lower · 1 same rating · 1,214 higher · ties share a rank

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 7,476 within 100 points of 1,077 (this player included)

Player · 1,077

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; 61.1% below 1,077)

Percentile over time · United States

61.1% higher than · Nov 2026 · rank #32,207 of 83,032

Since Sep 2026
-1.7 pts

Sep 2026Nov 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 North Carolina 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 Rivera, Efrain Omar
Month	Regular	Quick
Nov 2026	1,077 Pno change · 17 games	1,152 Pno change · 12 games
Oct 2026	1,077 P-24 · 17 games	1,152 P-111 · 12 games
Sep 2026	1,101 P11 games	1,263 P6 games

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