USCF player statistics
Guzman, Isabelle S
- Gender
- Female
- US Chess reported rank
- #69,820 national · #545 in state
- Floor
- Regular 109 · Quick 109
- Rated games
- Regular 16 · Quick 16
US Chess record as of Sep 17, 2026
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +3
- Feb 2026 to Mar 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 2 updates
- +6 from Feb 2026 to Apr 2026
- Current run
- 6 updates
- Unchanged since Apr 2026
- Typical move
- ±1
- Mean absolute change; spread ±1.3
Regular rating in context
United States
#78,643of 82,596 rated members · higher than 4.5%
3,797 lower · 157 same rating · 78,642 higher · ties share a rank
Nevada
#671of 713 rated members · higher than 5.4%
39 lower · 4 same rating · 670 higher · ties share a rank
Where this rating sits · United States
82,596 rated members in 50-point bands · median 800–849 · 9,211 within 100 points of 109 (this player included)
100–149: 6,424 members (7.7%) · highlighted band is the player’s · dashed line is the target
7.7% below 150 (6,424 of 82,596; 4.5% below 109)
Percentile over time · United States
4.5% higher than · Oct 2026 · rank #78,643 of 82,596
Since Dec 2025
+2.6 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 | 109 Pno change · 16 games | 109 Pno change · 16 games |
| Sep 2026 | 109 Pno change · 16 games | 109 Pno change · 16 games |
| Aug 2026 | 109 Pno change · 16 games | 109 Pno change · 16 games |
| Jul 2026 | 109 Pno change · 16 games | 109 Pno change · 16 games |
| Jun 2026 | 109 Pno change · 16 games | 109 Pno change · 16 games |
| May 2026 | 109 Pno change · 16 games | 109 Pno change · 16 games |
| Apr 2026 | 109 P+3 · 16 games | 109 P+3 · 16 games |
| Mar 2026 | 106 P+3 · 10 games | 106 P+3 · 10 games |
| Feb 2026 | 103 Pno change · 10 games | 103 Pno change · 10 games |
| Jan 2026 | 103 Pno change · 5 games | 103 Pno change · 5 games |
| Dec 2025 | 103 P5 games | 103 P5 games |