USCF player statistics
Petrosian, Tony
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 4 published updates since Jun 2026
Other formats against Regular
-18 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +1
- Jun 2026 to Jul 2026
- Biggest drop
- -1
- Jul 2026 to Aug 2026
- Longest rise
- 1 update
- +1 from Jun 2026 to Jul 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±1
- Mean absolute change; spread ±1
Regular rating in context
United States
#55,635of 83,635 rated members · higher than 33.4%
27,935 lower · 66 same rating · 55,634 higher · ties share a rank
California
#6,302of 9,051 rated members · higher than 30.3%
2,746 lower · 4 same rating · 6,301 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,785 within 100 points of 558 (this player included)
550–599: 2,691 members (3.2%) · highlighted band is the player’s · dashed line is the target
36.1% below 600 (30,195 of 83,635; 33.4% below 558)
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 | 558 Pno change · 5 games | 540 Pno change · 5 games |
| Aug 2026 | 558 P-1 · 5 games | 540 Pno change · 5 games |
| Jul 2026 | 559 P+1 · 5 games | 540 Pno change · 5 games |
| Jun 2026 | 558 P5 games | 540 P5 games |
| May 2026 | — | — |