USCF player statistics
Petrishak, Nathaniel Marc
- Biggest rank climb · #6 in Oregon (Quick)
- Biggest rank climb · #8 in Oregon (Regular)
- Fastest rising · #23 in United States (Quick)
- Fastest rising · #21 in United States (Regular)
- Fastest rising · #1 in Oregon (Quick)
- Fastest rising · #1 in Oregon (Regular)
- Gender
- Male
- US Chess reported rank
- #26,979 national · #408 in state
- Floor
- Regular 150 · Quick 150
US Chess record as of Sep 17, 2026
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +308
- Sep 2026 to Oct 2026
- Biggest drop
- -35
- Mar 2026 to Apr 2026
- Longest rise
- 1 update
- +308 from Sep 2026 to Oct 2026
- Updates that moved
- 4 of 10
- Latest +308, Sep 2026 to Oct 2026
- Typical move
- ±50
- Mean absolute change; spread ±102.3
Regular rating in context
United States
#23,189of 82,596 rated members · higher than 71.8%
59,373 lower · 35 same rating · 23,188 higher · ties share a rank
Oregon
#328of 1,473 rated members · higher than 77.6%
1,144 lower · 2 same rating · 327 higher · ties share a rank
Where this rating sits · United States
82,596 rated members in 50-point bands · median 800–849 · 6,958 within 100 points of 1,326 (this player included)
1,300–1,349: 1,765 members (2.1%) · highlighted band is the player’s · dashed line is the target
72.8% below 1,350 (60,192 of 82,596; 71.8% below 1,326)
Percentile over time · United States
71.8% higher than · Oct 2026 · rank #23,189 of 82,596
Since Dec 2025
+18.6 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 | 1,326+308 | 1,296+306 |
| Sep 2026 | 1,018no change | 990no change |
| Aug 2026 | 1,018no change | 990no change |
| Jul 2026 | 1,018no change | 990no change |
| Jun 2026 | 1,018+29 | 990+44 |
| May 2026 | 989no change | 946 Pno change · 24 games |
| Apr 2026 | 989-35 | 946 P-29 · 24 games |
| Mar 2026 | 1,024no change | 975 P+1 · 21 games |
| Feb 2026 | 1,024no change | 974 P-1 · 21 games |
| Jan 2026 | 1,024+124 | 975 Pno change · 21 games |
| Dec 2025 | 900 | 975 P21 games |