USCF player statistics
David, Rebecca Eirian Madelief
- Biggest rank climb · #28 in Wyoming (Quick)
- Biggest rank climb · #22 in Wyoming (Regular)
- Top rated · #41 in Wyoming (Quick)
- Top rated · #69 in Wyoming (Regular)
- Gender
- Female
- FIDE
- FIDE 0
- US Chess reported rank
- #45,956 national · #53 in state
- Floor
- Regular 150 · Quick 138
- Rated games
- Quick 19
US Chess record as of Sep 16, 2026
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +10
- Mar 2026 to Apr 2026
- Biggest drop
- -23
- Apr 2026 to May 2026
- Longest rise
- 1 update
- +10 from Mar 2026 to Apr 2026
- Current run
- 4 updates
- Unchanged since Jun 2026
- Typical move
- ±5
- Mean absolute change; spread ±8.9
Regular rating in context
United States
#54,295of 82,596 rated members · higher than 34.1%
28,243 lower · 59 same rating · 54,294 higher · ties share a rank
Wyoming
#69of 115 rated members · higher than 40%
46 lower · 1 same rating · 68 higher · ties share a rank
Where this rating sits · United States
82,596 rated members in 50-point bands · median 800–849 · 10,412 within 100 points of 577 (this player included)
550–599: 2,631 members (3.1%) · highlighted band is the player’s · dashed line is the target
35.6% below 600 (29,460 of 82,596; 34.1% below 577)
Percentile over time · United States
34.1% higher than · Oct 2026 · rank #54,295 of 82,596
Since Dec 2025
-2.1 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 | 577no change | 437 Pno change · 19 games |
| Sep 2026 | 577no change | 437 Pno change · 19 games |
| Aug 2026 | 577no change | 437 Pno change · 19 games |
| Jul 2026 | 577no change | 437 Pno change · 19 games |
| Jun 2026 | 577-12 | 437 P+9 · 19 games |
| May 2026 | 589-23 | 428 P+14 · 14 games |
| Apr 2026 | 612+10 | 414 P+66 · 9 games |
| Mar 2026 | 602 Pno change · 22 games | 348 Pno change · 5 games |
| Feb 2026 | 602 Pno change · 22 games | 348 Pno change · 5 games |
| Jan 2026 | 602 Pno change · 22 games | 348 Pno change · 5 games |
| Dec 2025 | 602 P22 games | 348 P5 games |