USCF player statistics
Ju, Seungwoo James
Official US Chess recordRegular rating
638
Provisional rating
Regular rating in context
United States
Among 83,635 rated members; tied ratings share a rank.
Higher than 38.5% of ratings in this population.
California
Among 9,051 rated members; tied ratings share a rank.
Higher than 35.1% of ratings in this population.
Calculated from the Sep 2026 supplement, using the same population as Chess67’s USCF statistics: US members classified as active by the supplement rules, excluding lifetime-coded records. Includes provisional ratings. These are Chess67 calculations, not official US Chess rankings.
Published ratings by supplement
All available formats. P indicates a provisional rating.
| Supplement | Regular | Quick |
|---|---|---|
| Sep 2026 | 638 P | 630 P |
| Aug 2026 | 638 P | 630 P |
| Jul 2026 | 677 P | 667 P |
| Jun 2026 | 677 P | 667 P |
| May 2026 | 677 P | 667 P |
| Apr 2026 | 677 P | 667 P |
| Mar 2026 | 677 P | 667 P |
| Feb 2026 | 657 P | 648 P |
| Jan 2026 | 713 P | 707 P |
| Dec 2025 | — | — |
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