USCF player statistics
Ostapenko, Ian
Official US Chess recordQuick rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +99
- Feb 2026 to Mar 2026
- Biggest drop
- -81
- Mar 2026 to Apr 2026
- Longest rise
- 1 update
- +99 from Feb 2026 to Mar 2026
- Current run
- 5 updates
- Unchanged since Apr 2026
- Typical move
- ±31
- Mean absolute change; spread ±51.9
Quick rating in context
United States
66.6%of the comparison population has a lower rating.
52,687 lower · 25 same rating · 26,307 higher
Where this rating sits · United States
79,019 rated members in 50-point bands · median 750–799 · 8,078 within 100 points of 1,058
1,050–1,099: 2,001 members (2.5%) · highlighted band is the player’s · dashed line is the target
68.7% below 1,100 (54,343 of 79,019; 66.6% below 1,058)
How these comparisons are calculated
Chess67 calculations from the Sep 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: it is a rating comparison, not a prediction of future rank. This player is outside that comparison population; no membership rank is assigned.
Published ratings by month
P marks a provisional rating; the small figure is the change since the previous published observation.
| Month | Quick |
|---|---|
| Sep 2026 | 1,058no change |
| Aug 2026 | 1,058no change |
| Jul 2026 | 1,058no change |
| Jun 2026 | 1,058no change |
| May 2026 | 1,058no change |
| Apr 2026 | 1,058-81 |
| Mar 2026 | 1,139+99 |
| Feb 2026 | 1,040-53 |
| Jan 2026 | 1,093 P+49 · 24 games |
| Dec 2025 | 1,044 P21 games |