USCF player statistics
Karachristos, Sofia
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-1 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +118
- Jul 2026 to Aug 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 1 update
- +118 from Jul 2026 to Aug 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±20
- Mean absolute change; spread ±41.4
Regular rating in context
United States
#70,193of 83,635 rated members · higher than 16%
13,391 lower · 52 same rating · 70,192 higher · ties share a rank
Florida
#3,646of 4,396 rated members · higher than 17%
749 lower · 2 same rating · 3,645 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,260 within 100 points of 289 (this player included)
250–299: 2,532 members (3%) · highlighted band is the player’s · dashed line is the target
16.6% below 300 (13,947 of 83,635; 16% below 289)
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 | 289 Pno change · 15 games | 288 Pno change · 15 games |
| Aug 2026 | 289 P+118 · 15 games | 288 P+116 · 15 games |
| Jul 2026 | 171 Pno change · 12 games | 172 Pno change · 12 games |
| Jun 2026 | 171 Pno change · 12 games | 172 Pno change · 12 games |
| May 2026 | 171 P+59 · 12 games | 172 P+60 · 12 games |
| Apr 2026 | 112 Pno change · 8 games | 112 Pno change · 8 games |
| Mar 2026 | 112 P+7 · 8 games | 112 P+7 · 8 games |
| Feb 2026 | 105 Pno change · 8 games | 105 Pno change · 8 games |
| Jan 2026 | 105 Pno change · 4 games | 105 Pno change · 4 games |
| Dec 2025 | 105 P4 games | 105 P4 games |