USCF player statistics
Lambooy, Theodore David
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 7 published updates since Mar 2026
Other formats against Regular
-2 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +2
- Jul 2026 to Aug 2026
- Biggest drop
- -1
- Mar 2026 to Apr 2026
- Longest rise
- 1 update
- +2 from Jul 2026 to Aug 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±1
- Mean absolute change; spread ±1
Regular rating in context
United States
10.7%of the comparison population has a lower rating.
8,952 lower · 46 same rating · 74,637 higher
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 13,947 within 100 points of 199
150–199: 2,383 members (2.8%) · highlighted band is the player’s · dashed line is the target
10.7% below 200 (8,998 of 83,635; 10.7% below 199)
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 | 199 Pno change · 6 games | 197 Pno change · 6 games |
| Aug 2026 | 199 P+2 · 6 games | 197 P+1 · 6 games |
| Jul 2026 | 197 Pno change · 6 games | 196 Pno change · 6 games |
| Jun 2026 | 197 Pno change · 6 games | 196 Pno change · 6 games |
| May 2026 | 197 Pno change · 6 games | 196 Pno change · 6 games |
| Apr 2026 | 197 P-1 · 6 games | 196 Pno change · 6 games |
| Mar 2026 | 198 P6 games | 196 P6 games |
| Feb 2026 | — | — |