USCF player statistics
Poss, Zachary
- US Chess reported rank
- #22,829 national · #713 in state
- Floor
- Regular 150
US Chess record as of Sep 17, 2026
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +144
- Sep 2026 to Oct 2026
- Biggest drop
- -58
- Mar 2026 to Apr 2026
- Longest rise
- 4 updates
- +243 from Jun 2026 to Oct 2026
- Updates that moved
- 9 of 9
- Latest +144, Sep 2026 to Oct 2026
- Typical move
- ±56
- Mean absolute change; spread ±72.3
Regular rating in context
United States
#24,616of 82,596 rated members · higher than 70.1%
57,949 lower · 32 same rating · 24,615 higher · ties share a rank
Virginia
#816of 2,606 rated members · higher than 68.6%
1,789 lower · 2 same rating · 815 higher · ties share a rank
Where this rating sits · United States
82,596 rated members in 50-point bands · median 800–849 · 6,891 within 100 points of 1,286 (this player included)
1,250–1,299: 1,672 members (2%) · highlighted band is the player’s · dashed line is the target
70.7% below 1,300 (58,427 of 82,596; 70.1% below 1,286)
Percentile over time · United States
70.1% higher than · Oct 2026 · rank #24,616 of 82,596
Since Jan 2026
+9.3 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 |
|---|---|
| Oct 2026 | 1,286+144 |
| Sep 2026 | 1,142+76 |
| Aug 2026 | 1,066 P+17 · 24 games |
| Jul 2026 | 1,049 P+6 · 21 games |
| Jun 2026 | 1,043 P-5 · 20 games |
| May 2026 | 1,048 P-55 · 18 games |
| Apr 2026 | 1,103 P-58 · 14 games |
| Mar 2026 | 1,161 P-24 · 10 games |
| Feb 2026 | 1,185 P+115 · 10 games |
| Jan 2026 | 1,070 P4 games |
| Dec 2025 | — |