USCF player statistics
Calder, Jack
Official US Chess record- Biggest rank climb · #31 in Mississippi (Blitz)
- Top rated · #38 in Mississippi (Blitz)
- Top rated · #26 in Mississippi (Quick)
- Top rated · #36 in Mississippi (Regular)
- FIDE
- FIDE 39971520
Regular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-105 Quick vs Regular
No national baseline for this rating band yet.
-468 Blitz vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +108
- Mar 2026 to Apr 2026
- Biggest drop
- -44
- Aug 2026 to Sep 2026
- Longest rise
- 3 updates
- +180 from Mar 2026 to Jun 2026
- Updates that moved
- 8 of 9
- Latest -44, Aug 2026 to Sep 2026
- Typical move
- ±44
- Mean absolute change; spread ±55.1
Regular rating in context
United States
#12,276of 83,635 rated members · higher than 85.2%
71,334 lower · 26 same rating · 12,275 higher · ties share a rank
Mississippi
#36of 387 rated members · higher than 90.6%
351 lower · 1 same rating · 35 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 6,497 within 100 points of 1,644 (this player included)
1,600–1,649: 1,832 members (2.1%) · highlighted band is the player’s · dashed line is the target
85.5% below 1,650 (71,512 of 83,635; 85.2% below 1,644)
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 | 1,644-44 | 1,539no change | 1,176no change |
| Aug 2026 | 1,688+24 | 1,539+19 | 1,176-1 |
| Jul 2026 | 1,664no change | 1,520+40 | 1,177-59 |
| Jun 2026 | 1,664+52 | 1,480+27 | 1,236+29 |
| May 2026 | 1,612+20 | 1,453+35 | 1,207no change |
| Apr 2026 | 1,592+108 | 1,418+164 | 1,207no change |
| Mar 2026 | 1,484-4 | 1,254+12 | 1,207no change |
| Feb 2026 | 1,488-43 | 1,242no change | 1,207+18 |
| Jan 2026 | 1,531+101 | 1,242+16 | 1,189no change |
| Dec 2025 | 1,430 | 1,226 | 1,189 |