USCF player statistics
Koch, Brennin Robert
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +85
- Apr 2026 to May 2026
- Biggest drop
- -1
- Jul 2026 to Aug 2026
- Longest rise
- 1 update
- +85 from Apr 2026 to May 2026
- Current run
- 1 update
- Unchanged since Aug 2026
- Typical move
- ±10
- Mean absolute change; spread ±28.3
Regular rating in context
United States
#39,041of 83,635 rated members · higher than 53.2%
44,559 lower · 36 same rating · 39,040 higher · ties share a rank
Wisconsin
#553of 961 rated members · higher than 42.3%
407 lower · 2 same rating · 552 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 8,721 within 100 points of 900 (this player included)
900–949: 2,108 members (2.5%) · highlighted band is the player’s · dashed line is the target
55.7% below 950 (46,667 of 83,635; 53.2% below 900)
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, 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 |
|---|---|
| Sep 2026 | 900 Pno change · 12 games |
| Aug 2026 | 900 P-1 · 12 games |
| Jul 2026 | 901 P+1 · 12 games |
| Jun 2026 | 900 Pno change · 12 games |
| May 2026 | 900 P+85 · 12 games |
| Apr 2026 | 815 Pno change · 5 games |
| Mar 2026 | 815 Pno change · 5 games |
| Feb 2026 | 815 P+1 · 5 games |
| Jan 2026 | 814 Pno change · 5 games |
| Dec 2025 | 814 P5 games |