USCF player statistics
Mattox, Riley
Official US Chess record- US Chess reported rank
- #31,706 national · #1,437 in state
- Floor
- Regular 150 · Quick 143
- Rated games
- Regular 18 · Quick 14
US Chess record as of Aug 15, 2026
Regular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-123 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +101
- May 2026 to Jun 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 1 update
- +101 from May 2026 to Jun 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±13
- Mean absolute change; spread ±33.5
Regular rating in context
United States
#37,897of 83,635 rated members · higher than 54.6%
45,697 lower · 42 same rating · 37,896 higher · ties share a rank
Illinois
#1,746of 4,678 rated members · higher than 62.5%
2,928 lower · 5 same rating · 1,745 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 8,517 within 100 points of 928 (this player included)
900–949: 2,108 members (2.5%) · highlighted band is the player’s · dashed line is the target
55.7% below 950 (46,667 of 83,635; 54.6% below 928)
How these comparisons are calculated
Chess67 calculations from the Sep 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.
Published ratings by month
P marks a provisional rating; the small figure is the change since the previous published observation.
| Month | Regular | Quick |
|---|---|---|
| Sep 2026 | 928 Pno change · 18 games | 805 Pno change · 14 games |
| Aug 2026 | 928 P+18 · 18 games | 805 Pno change · 14 games |
| Jul 2026 | 910 Pno change · 18 games | 805 Pno change · 14 games |
| Jun 2026 | 910 P+101 · 18 games | 805 Pno change · 14 games |
| May 2026 | 809 Pno change · 14 games | 805 Pno change · 14 games |
| Apr 2026 | 809 Pno change · 14 games | 805 Pno change · 14 games |
| Mar 2026 | 809 Pno change · 14 games | 805 Pno change · 14 games |
| Feb 2026 | 809 Pno change · 14 games | 805 Pno change · 14 games |
| Jan 2026 | 809 Pno change · 14 games | 805 Pno change · 14 games |
| Dec 2025 | 809 P14 games | 805 P14 games |