USCF player statistics

Couvillion, Mark

USCF 12136640MississippiUpdated: Oct 2026
Official US Chess record

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Gender
Male
FIDE
FIDE 30927390
TD
Club
US Chess reported rank
#4,737 national · #7 in state
Floor
Regular 1,800 · Quick 1,700

US Chess record as of Sep 14, 2026

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Rating format

Regular rating

1,8530 since Sep 2026

Published rating · Oct 2026 · 11 published updates since Dec 2025

Oct 20261,853 Regular
Dec 2025: 1813Jan 2026: 1813Feb 2026: 1820Mar 2026: 1820Apr 2026: 1821May 2026: 1829Jun 2026: 1846Jul 2026: 1846Aug 2026: 1853Sep 2026: 1853Oct 2026: 1853
Dec 2025Oct 2026
11 updates in this window · +40 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

  • -84 Quick vs Regular

    Typical for 1,800–1,899 regular players: -129 (middle half -222 to -74, 1,817 established members). This gap is within the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+17
May 2026 to Jun 2026
Biggest drop
—
No drop between published updates yet
Longest rise
3 updates
+26 from Mar 2026 to Jun 2026
Current run
2 updates
Unchanged since Aug 2026
Typical move
±4
Mean absolute change; spread ±5.7

Regular rating in context

Oct 2026 update

United States

#6,170of 82,596 rated members · higher than 92.4%

76,397 lower · 30 same rating · 6,169 higher · ties share a rank

Mississippi

#12of 372 rated members · higher than 96.7%

360 lower · 1 same rating · 11 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 4,974 within 100 points of 1,853 (this player included)

Player · 1,853
01,4502,900

1,850–1,899: 1,066 members (1.2%) · highlighted band is the player’s · dashed line is the target

93.6% below 1,900 (77,392 of 82,596; 92.4% below 1,853)

Percentile over time · United States

92.4% higher than · Oct 2026 · rank #6,170 of 82,596

Since Dec 2025
+1.3 pts

Dec 2025: higher than 91.1% (rank 7,126 of 81,102)Jan 2026: higher than 91% (rank 7,065 of 79,487)Feb 2026: higher than 91.4% (rank 7,133 of 83,940)Mar 2026: higher than 91.3% (rank 6,945 of 80,605)Apr 2026: higher than 91.4% (rank 6,888 of 80,831)May 2026: higher than 91.7% (rank 6,721 of 81,236)Jun 2026: higher than 92.3% (rank 6,314 of 83,290)Jul 2026: higher than 92.3% (rank 6,268 of 82,736)Aug 2026: higher than 92.6% (rank 6,098 of 83,080)Sep 2026: higher than 92.6% (rank 6,156 of 83,635)Oct 2026: higher than 92.4% (rank 6,170 of 82,596)
Dec 2025Oct 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 Oct 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 Mississippi 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 Couvillion, Mark
MonthRegularQuick
Oct 20261,853no change1,769no change
Sep 20261,853no change1,769no change
Aug 20261,853+71,769+5
Jul 20261,846no change1,764no change
Jun 20261,846+171,764+13
May 20261,829+81,751no change
Apr 20261,821+11,751no change
Mar 20261,820no change1,751no change
Feb 20261,820+71,751no change
Jan 20261,813no change1,751no change
Dec 20251,8131,751
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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.