USCF player statistics
Grubb, Matt
- Biggest rank climb · #26 in South Carolina (Quick)
- Biggest rank climb · #6 in South Carolina (Regular)
- Fastest rising · #14 in South Carolina (Quick)
- Fastest rising · #4 in South Carolina (Regular)
- Gender
- Male
- US Chess reported rank
- #21,776 national · #232 in state
- Floor
- Regular 126 · Quick 150
US Chess record as of Sep 15, 2026
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +222
- Oct 2026 to Nov 2026
- Biggest drop
- -44
- May 2026 to Jun 2026
- Longest rise
- 1 update
- +222 from Oct 2026 to Nov 2026
- Updates that moved
- 5 of 7
- Latest +222, Oct 2026 to Nov 2026
- Typical move
- ±66
- Mean absolute change; spread ±104.9
Regular rating in context
United States
#21,167of 83,032 rated members · higher than 74.4%
61,836 lower · 30 same rating · 21,166 higher · ties share a rank
South Carolina
#215of 819 rated members · higher than 73.7%
604 lower · 1 same rating · 214 higher · ties share a rank
Where this rating sits · United States
83,032 rated members in 50-point bands · median 850–899 · 6,943 within 100 points of 1,392 (this player included)
1,350–1,399: 1,656 members (1.9%) · highlighted band is the player’s · dashed line is the target
74.8% below 1,400 (62,111 of 83,032; 74.4% below 1,392)
Percentile over time · United States
74.4% higher than · Nov 2026 · rank #21,167 of 83,032
Since Apr 2026
+13.5 pts
How these comparisons are calculated
Chess67 calculations from the Nov 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 |
|---|---|---|
| Nov 2026 | 1,392+222 | 1,375+156 |
| Oct 2026 | 1,170-6 | 1,219-32 |
| Sep 2026 | 1,176+170 | 1,251+14 |
| Aug 2026 | 1,006-22 | 1,237-69 |
| Jul 2026 | 1,028no change | 1,306 P+190 · 24 games |
| Jun 2026 | 1,028-44 | 1,116 P+64 · 21 games |
| May 2026 | 1,072 Pno change · 21 games | 1,052 Pno change · 14 games |
| Apr 2026 | 1,072 P21 games | 1,052 P14 games |