USCF player statistics
Mosgrober, Justin
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-24 Quick vs Regular (provisional)
No national baseline for this rating band yet.
+215 Blitz vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- —
- No gain between published updates yet
- Biggest drop
- -4
- Feb 2026 to Mar 2026
- Longest rise
- —
- No consecutive gains yet
- Current run
- 6 updates
- Unchanged since Mar 2026
- Typical move
- ±0
- Mean absolute change; spread ±1.3
Regular rating in context
United States
#30,449of 83,635 rated members · higher than 63.5%
53,146 lower · 41 same rating · 30,448 higher · ties share a rank
Arizona
#670of 1,686 rated members · higher than 60.2%
1,016 lower · 1 same rating · 669 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 7,387 within 100 points of 1,116 (this player included)
1,100–1,149: 1,828 members (2.1%) · highlighted band is the player’s · dashed line is the target
65% below 1,150 (54,383 of 83,635; 63.5% below 1,116)
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 |
|---|---|---|---|
| Sep 2026 | 1,116 Pno change · 21 games | 1,092 Pno change · 21 games | 1,331no change |
| Aug 2026 | 1,116 Pno change · 21 games | 1,092 P-1 · 21 games | 1,331+433 |
| Jul 2026 | 1,116 Pno change · 21 games | 1,093 Pno change · 21 games | 898 Pno change · 16 games |
| Jun 2026 | 1,116 Pno change · 21 games | 1,093 Pno change · 21 games | 898 Pno change · 16 games |
| May 2026 | 1,116 Pno change · 21 games | 1,093 Pno change · 21 games | 898 Pno change · 16 games |
| Apr 2026 | 1,116 Pno change · 21 games | 1,093 Pno change · 21 games | 898 Pno change · 16 games |
| Mar 2026 | 1,116 P-4 · 21 games | 1,093 P-8 · 21 games | 898 Pno change · 16 games |
| Feb 2026 | 1,120 Pno change · 21 games | 1,101 Pno change · 21 games | 898 Pno change · 16 games |
| Jan 2026 | 1,120 Pno change · 18 games | 1,101 Pno change · 18 games | 898 Pno change · 16 games |
| Dec 2025 | 1,120 P18 games | 1,101 P18 games | 898 P16 games |