USCF player statistics
Acosta, Rosa M
Official US Chess record- FIDE
- FIDE 0
Regular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-41 Quick vs Regular
No national baseline for this rating band yet.
-487 Blitz vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +203
- Jul 2026 to Aug 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 1 update
- +203 from Jul 2026 to Aug 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±23
- Mean absolute change; spread ±67.7
Regular rating in context
United States
#30,268of 83,635 rated members · higher than 63.7%
53,322 lower · 46 same rating · 30,267 higher · ties share a rank
New Mexico
#214of 420 rated members · higher than 49%
206 lower · 1 same rating · 213 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 7,361 within 100 points of 1,121 (this player included)
1,100–1,149: 1,828 members (2.1%) · highlighted band is the player’s · dashed line is the target
65% below 1,150 (54,383 of 83,635; 63.7% below 1,121)
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 | Blitz |
|---|---|---|---|
| Sep 2026 | 1,121no change | 1,080no change | 634 Pno change · 13 games |
| Aug 2026 | 1,121+203 | 1,080+250 | 634 Pno change · 13 games |
| Jul 2026 | 918no change | 830 Pno change · 23 games | 634 Pno change · 13 games |
| Jun 2026 | 918no change | 830 Pno change · 23 games | 634 Pno change · 13 games |
| May 2026 | 918no change | 830 Pno change · 23 games | 634 Pno change · 13 games |
| Apr 2026 | 918no change | 830 Pno change · 23 games | 634 Pno change · 13 games |
| Mar 2026 | 918no change | 830 Pno change · 23 games | 634 Pno change · 13 games |
| Feb 2026 | 918no change | 830 Pno change · 23 games | 634 Pno change · 13 games |
| Jan 2026 | 918no change | 830 Pno change · 23 games | 634 Pno change · 13 games |
| Dec 2025 | 918 | 830 P23 games | 634 P13 games |