USCF player statistics
Corbett, Ian D
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 3 published updates since Jul 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
- 2 updates
- Unchanged since Jul 2026
- Typical move
- ±0
- Mean absolute change; spread ±0
Regular rating in context
United States
#39,077of 83,635 rated members · higher than 53.2%
44,501 lower · 58 same rating · 39,076 higher · ties share a rank
North Carolina
#1,439of 2,742 rated members · higher than 47.4%
1,301 lower · 3 same rating · 1,438 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 8,723 within 100 points of 899 (this player included)
850–899: 2,189 members (2.6%) · highlighted band is the player’s · dashed line is the target
53.2% below 900 (44,559 of 83,635; 53.2% below 899)
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, 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 |
|---|---|
| Sep 2026 | 899 Pno change · 5 games |
| Aug 2026 | 899 Pno change · 5 games |
| Jul 2026 | 899 P5 games |
| Jun 2026 | — |