USCF player statistics

Petithory, Louis

USCF 10003733MassachusettsUpdated: Oct 2026
Official US Chess record

Enter an 8-digit USCF ID, or at least 3 letters of a name. Similar names in MA appear first.

Gender
Male
FIDE
FIDE 2060744
Floor
Regular 1,900 · Quick 1,700

US Chess record as of Sep 14, 2026

Rating format

Regular rating

1,9500 since Sep 2026

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

Oct 20261,950 Regular
Dec 2025: 1950Jan 2026: 1950Feb 2026: 1950Mar 2026: 1950Apr 2026: 1950May 2026: 1950Jun 2026: 1950Jul 2026: 1950Aug 2026: 1950Sep 2026: 1950Oct 2026: 1950
Dec 2025Oct 2026
11 updates in this window · 0 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

  • -90 Quick vs Regular

    Typical for 1,900–1,999 regular players: -144 (middle half -232 to -83, 1,419 established members). This gap is within the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
—
No gain between published updates yet
Biggest drop
—
No drop between published updates yet
Longest rise
—
No consecutive gains yet
Current run
10 updates
Unchanged since Dec 2025
Typical move
±0
Mean absolute change; spread ±0

Regular rating in context

Oct 2026 update

United States

#4,047of 82,596 rated members · higher than 95%

78,534 lower · 16 same rating · 4,046 higher · ties share a rank

Massachusetts

#155of 1,673 rated members · higher than 90.7%

1,518 lower · 1 same rating · 154 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 3,868 within 100 points of 1,950 (this player included)

Player · 1,950
01,4502,900

1,950–1,999: 786 members (0.9%) · highlighted band is the player’s · dashed line is the target

96% below 2,000 (79,320 of 82,596; 95% below 1,950)

Percentile over time · United States

95% higher than · Oct 2026 · rank #4,047 of 82,596

Since Dec 2025
0 pts

Dec 2025: higher than 95% (rank 3,989 of 81,102)Jan 2026: higher than 95% (rank 3,933 of 79,487)Feb 2026: higher than 95.1% (rank 4,099 of 83,940)Mar 2026: higher than 95% (rank 3,999 of 80,605)Apr 2026: higher than 95% (rank 3,992 of 80,831)May 2026: higher than 95% (rank 4,019 of 81,236)Jun 2026: higher than 95.1% (rank 4,021 of 83,290)Jul 2026: higher than 95.1% (rank 3,967 of 82,736)Aug 2026: higher than 95.2% (rank 3,962 of 83,080)Sep 2026: higher than 95.1% (rank 4,027 of 83,635)Oct 2026: higher than 95% (rank 4,047 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 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 Petithory, Louis
MonthRegularQuick
Oct 20261,950no change1,860no change
Sep 20261,950no change1,860no change
Aug 20261,950no change1,860no change
Jul 20261,950no change1,860no change
Jun 20261,950no change1,860no change
May 20261,950no change1,860no change
Apr 20261,950no change1,860no change
Mar 20261,950no change1,860no change
Feb 20261,950no change1,860no change
Jan 20261,950no change1,860no change
Dec 20251,9501,860
Chess67 DiscordChat with the Chess67 community.Open Find a chess tournamentUpcoming events near you.Browse Find a chess clubClubs and meetups near you.Browse

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.