USCF player statistics
Griffey, Callan Meredith
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
+9 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +79
- Mar 2026 to Apr 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 1 update
- +79 from Mar 2026 to Apr 2026
- Current run
- 5 updates
- Unchanged since Apr 2026
- Typical move
- ±9
- Mean absolute change; spread ±26.2
Regular rating in context
United States
#68,784of 83,635 rated members · higher than 17.6%
14,800 lower · 52 same rating · 68,783 higher · ties share a rank
Oklahoma
#520of 643 rated members · higher than 19.1%
123 lower · 1 same rating · 519 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,452 within 100 points of 317 (this player included)
300–349: 2,672 members (3.1%) · highlighted band is the player’s · dashed line is the target
19.8% below 350 (16,619 of 83,635; 17.6% below 317)
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 | 317 Pno change · 15 games | 326 Pno change · 15 games |
| Aug 2026 | 317 Pno change · 15 games | 326 Pno change · 15 games |
| Jul 2026 | 317 Pno change · 15 games | 326 Pno change · 15 games |
| Jun 2026 | 317 Pno change · 15 games | 326 Pno change · 15 games |
| May 2026 | 317 Pno change · 15 games | 326 Pno change · 15 games |
| Apr 2026 | 317 P+79 · 15 games | 326 P+83 · 15 games |
| Mar 2026 | 238 Pno change · 10 games | 243 Pno change · 10 games |
| Feb 2026 | 238 P+4 · 10 games | 243 P+5 · 10 games |
| Jan 2026 | 234 Pno change · 5 games | 238 Pno change · 5 games |
| Dec 2025 | 234 P5 games | 238 P5 games |