USCF player statistics
Underwood, Sean J
Official US Chess record- FIDE
- FIDE 0
Online Blitz rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +32
- May 2026 to Jun 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 1 update
- +32 from May 2026 to Jun 2026
- Current run
- 3 updates
- Unchanged since Jun 2026
- Typical move
- ±4
- Mean absolute change; spread ±10.7
Online Blitz rating in context
United States
63.2%of the comparison population has a lower rating.
3,074 lower · 5 same rating · 1,784 higher
Where this rating sits · United States
4,863 rated members in 50-point bands · median 1,400–1,449 · 823 within 100 points of 1,577
1,550–1,599: 210 members (4.3%) · highlighted band is the player’s · dashed line is the target
65.1% below 1,600 (3,166 of 4,863; 63.2% below 1,577)
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 | Online Blitz |
|---|---|
| Sep 2026 | 1,577no change |
| Aug 2026 | 1,577no change |
| Jul 2026 | 1,577no change |
| Jun 2026 | 1,577+32 |
| May 2026 | 1,545no change |
| Apr 2026 | 1,545no change |
| Mar 2026 | 1,545no change |
| Feb 2026 | 1,545no change |
| Jan 2026 | 1,545no change |
| Dec 2025 | 1,545 |