USCF player statistics
Cojocaru, Sebastian Roman
Official US Chess recordRegular rating
Published rating · Sep 2026 · 9 published updates since Jan 2026
Other formats against Regular
-3 Quick vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +179
- Apr 2026 to May 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 2 updates
- +180 from Apr 2026 to Jun 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±30
- Mean absolute change; spread ±61.9
Regular rating in context
United States
#67,248of 83,635 rated members · higher than 19.5%
16,319 lower · 69 same rating · 67,247 higher · ties share a rank
Rhode Island
#220of 274 rated members · higher than 19.3%
53 lower · 2 same rating · 219 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,665 within 100 points of 345 (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; 19.5% below 345)
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 | 345no change | 342no change |
| Aug 2026 | 345+45 | 342+40 |
| Jul 2026 | 300 Pno change · 22 games | 302 Pno change · 22 games |
| Jun 2026 | 300 P+1 · 22 games | 302 P+7 · 22 games |
| May 2026 | 299 P+179 · 18 games | 295 P+177 · 18 games |
| Apr 2026 | 120 Pno change · 14 games | 118 Pno change · 14 games |
| Mar 2026 | 120 P+10 · 14 games | 118 P+9 · 14 games |
| Feb 2026 | 110 P+8 · 14 games | 109 P+7 · 14 games |
| Jan 2026 | 102 P7 games | 102 P7 games |
| Dec 2025 | — | — |