USCF player statistics
Kobata, Christopher Susumu
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-14 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +1
- Jul 2026 to Aug 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 1 update
- +1 from Jul 2026 to Aug 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±0
- Mean absolute change; spread ±0.3
Regular rating in context
United States
36.7%of the comparison population has a lower rating.
30,705 lower · 43 same rating · 52,887 higher
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,561 within 100 points of 609
600–649: 2,641 members (3.1%) · highlighted band is the player’s · dashed line is the target
39.2% below 650 (32,836 of 83,635; 36.7% below 609)
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 | Regular | Quick |
|---|---|---|
| Sep 2026 | 609 Pno change · 20 games | 595 Pno change · 20 games |
| Aug 2026 | 609 P+1 · 20 games | 595 P+1 · 20 games |
| Jul 2026 | 608 Pno change · 20 games | 594 Pno change · 20 games |
| Jun 2026 | 608 Pno change · 20 games | 594 Pno change · 20 games |
| May 2026 | 608 Pno change · 20 games | 594 Pno change · 20 games |
| Apr 2026 | 608 Pno change · 20 games | 594 Pno change · 20 games |
| Mar 2026 | 608 Pno change · 20 games | 594 Pno change · 20 games |
| Feb 2026 | 608 Pno change · 20 games | 594 Pno change · 20 games |
| Jan 2026 | 608 Pno change · 20 games | 594 Pno change · 20 games |
| Dec 2025 | 608 P20 games | 594 P20 games |