USCF player statistics
Yefymenko, Mia
- Biggest rank climb · #56 in Pennsylvania (Quick)
- Biggest rank climb · #64 in Pennsylvania (Regular)
- Fastest rising · #55 in Pennsylvania (Quick)
- Fastest rising · #52 in Pennsylvania (Regular)
- Gender
- Female
- FIDE
- FIDE 0
- US Chess reported rank
- #38,850 national · #1,266 in state
- Floor
- Regular 150 · Quick 150
US Chess record as of Sep 15, 2026
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +287
- Jul 2026 to Sep 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 2 updates
- +349 from Jul 2026 to Oct 2026
- Updates that moved
- 2 of 9
- Latest +62, Sep 2026 to Oct 2026
- Typical move
- ±39
- Mean absolute change; spread ±95.3
Regular rating in context
United States
#44,069of 82,596 rated members · higher than 46.5%
38,469 lower · 59 same rating · 44,068 higher · ties share a rank
Pennsylvania
#1,516of 2,576 rated members · higher than 41.1%
1,059 lower · 2 same rating · 1,515 higher · ties share a rank
Where this rating sits · United States
82,596 rated members in 50-point bands · median 800–849 · 9,258 within 100 points of 786 (this player included)
750–799: 2,275 members (2.7%) · highlighted band is the player’s · dashed line is the target
47.3% below 800 (39,137 of 82,596; 46.5% below 786)
Percentile over time · United States
46.5% higher than · Oct 2026 · rank #44,069 of 82,596
Since Dec 2025
+20.8 pts
How these comparisons are calculated
Chess67 calculations from the Oct 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 |
|---|---|---|
| Oct 2026 | 786+62 | 693+43 |
| Sep 2026 | 724+287 | 650+237 |
| Jul 2026 | 437 Pno change · 15 games | 413 Pno change · 13 games |
| Jun 2026 | 437 Pno change · 15 games | 413 Pno change · 13 games |
| May 2026 | 437 Pno change · 15 games | 413 Pno change · 13 games |
| Apr 2026 | 437 Pno change · 15 games | 413 Pno change · 13 games |
| Mar 2026 | 437 Pno change · 15 games | 413 Pno change · 13 games |
| Feb 2026 | 437 Pno change · 15 games | 413 Pno change · 13 games |
| Jan 2026 | 437 Pno change · 15 games | 413 Pno change · 13 games |
| Dec 2025 | 437 P15 games | 413 P13 games |