USCF player statistics
Tolbert, Zachary J
- Gender
- Male
- Floor
- Quick 109
- Rated games
- Quick 5
US Chess record as of Sep 18, 2026
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- —
- No gain between published updates yet
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- —
- No consecutive gains yet
- Current run
- 4 updates
- Unchanged since Jul 2026
- Typical move
- ±0
- Mean absolute change; spread ±0
Quick rating in context
United States
#49,397of 78,544 rated members · higher than 37%
29,093 lower · 55 same rating · 49,396 higher · ties share a rank
Texas
#5,893of 10,510 rated members · higher than 43.8%
4,612 lower · 6 same rating · 5,892 higher · ties share a rank
Where this rating sits · United States
78,544 rated members in 50-point bands · median 750–799 · 10,722 within 100 points of 577 (this player included)
550–599: 2,693 members (3.4%) · highlighted band is the player’s · dashed line is the target
38.6% below 600 (30,344 of 78,544; 37% below 577)
Percentile over time · United States
37% higher than · Nov 2026 · rank #49,397 of 78,544
Since Jul 2026
-0.8 pts
How these comparisons are calculated
Chess67 calculations from the Nov 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 | Quick |
|---|---|
| Nov 2026 | 577 Pno change · 5 games |
| Oct 2026 | 577 Pno change · 5 games |
| Sep 2026 | 577 Pno change · 5 games |
| Aug 2026 | 577 Pno change · 5 games |
| Jul 2026 | 577 P5 games |