USCF player statistics
Grochowski, Robin J
Official US Chess record- Biggest rank climb · #18 in Wisconsin (Blitz)
- Top rated · #68 in Wisconsin (Blitz)
- Top rated · #18 in Wisconsin (Online Quick)
- FIDE
- FIDE 2038200
- TD
- Senior
- US Chess reported rank
- #8,130 national · #115 in state
- Floor
- Regular 1,600 · Quick 1,400 · Blitz 1,400 · Online Quick 100
- Rated games
- Online Quick 13
US Chess record as of Sep 14, 2026
Regular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-259 Quick vs Regular
No national baseline for this rating band yet.
-118 Blitz vs Regular
No national baseline for this rating band yet.
-122 Online Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +21
- Jul 2026 to Aug 2026
- Biggest drop
- -23
- Jan 2026 to Feb 2026
- Longest rise
- 1 update
- +21 from Jul 2026 to Aug 2026
- Updates that moved
- 9 of 9
- Latest -8, Aug 2026 to Sep 2026
- Typical move
- ±14
- Mean absolute change; spread ±16.4
Regular rating in context
United States
#10,913of 83,635 rated members · higher than 86.9%
72,696 lower · 27 same rating · 10,912 higher · ties share a rank
Wisconsin
#168of 961 rated members · higher than 82.5%
793 lower · 1 same rating · 167 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 6,238 within 100 points of 1,691 (this player included)
1,650–1,699: 1,441 members (1.7%) · highlighted band is the player’s · dashed line is the target
87.2% below 1,700 (72,953 of 83,635; 86.9% below 1,691)
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 | Quick | Blitz | Online Quick |
|---|---|---|---|---|
| Sep 2026 | 1,691-8 | 1,432no change | 1,573no change | 1,569 Pno change · 13 games |
| Aug 2026 | 1,699+21 | 1,432no change | 1,573no change | 1,569 Pno change · 13 games |
| Jul 2026 | 1,678-1 | 1,432no change | 1,573no change | 1,569 Pno change · 13 games |
| Jun 2026 | 1,679-23 | 1,432-11 | 1,573no change | 1,569 Pno change · 13 games |
| May 2026 | 1,702+9 | 1,443no change | 1,573no change | 1,569 Pno change · 13 games |
| Apr 2026 | 1,693-12 | 1,443-3 | 1,573no change | 1,569 Pno change · 13 games |
| Mar 2026 | 1,705+16 | 1,446no change | 1,573no change | 1,569 Pno change · 13 games |
| Feb 2026 | 1,689-23 | 1,446no change | 1,573no change | 1,569 Pno change · 13 games |
| Jan 2026 | 1,712-16 | 1,446no change | 1,573no change | 1,569 Pno change · 13 games |
| Dec 2025 | 1,728 | 1,446 | 1,573 | 1,569 P13 games |