USCF player statistics
Cobb, Isaiah Edward
- Gender
- Male
- FIDE
- FIDE 39984672
- US Chess reported rank
- #27,322 national · #552 in state
- Floor
- Regular 150 · Quick 150
US Chess record as of Sep 15, 2026
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +136
- May 2026 to Jun 2026
- Biggest drop
- -122
- Dec 2025 to Jan 2026
- Longest rise
- 2 updates
- +137 from May 2026 to Jul 2026
- Current run
- 1 update
- Unchanged since Oct 2026
- Typical move
- ±37
- Mean absolute change; spread ±63.7
Regular rating in context
United States
#32,764of 83,032 rated members · higher than 60.4%
50,232 lower · 37 same rating · 32,763 higher · ties share a rank
Michigan
#728of 1,912 rated members · higher than 61.8%
1,183 lower · 2 same rating · 727 higher · ties share a rank
Where this rating sits · United States
83,032 rated members in 50-point bands · median 850–899 · 7,580 within 100 points of 1,062 (this player included)
1,050–1,099: 1,893 members (2.2%) · highlighted band is the player’s · dashed line is the target
62.2% below 1,100 (51,669 of 83,032; 60.4% below 1,062)
Percentile over time · United States
60.4% higher than · Nov 2026 · rank #32,764 of 83,032
Since Dec 2025
+4 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 | Regular | Quick |
|---|---|---|
| Nov 2026 | 1,062no change | 876-1 |
| Oct 2026 | 1,062+55 | 877+53 |
| Sep 2026 | 1,007no change | 824no change |
| Aug 2026 | 1,007no change | 824no change |
| Jul 2026 | 1,007+1 | 824no change |
| Jun 2026 | 1,006+136 | 824no change |
| May 2026 | 870no change | 824no change |
| Apr 2026 | 870+62 | 824+100 |
| Mar 2026 | 808-35 | 724-3 |
| Feb 2026 | 843+1 | 727no change |
| Jan 2026 | 842-122 | 727-104 |
| Dec 2025 | 964 | 831 |