USCF player statistics
Mulcahy, Arlo
Official US Chess recordRegular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-5 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +91
- Aug 2026 to Sep 2026
- Biggest drop
- -211
- Dec 2025 to Jan 2026
- Longest rise
- 2 updates
- +144 from Jul 2026 to Sep 2026
- Updates that moved
- 6 of 9
- Latest +91, Aug 2026 to Sep 2026
- Typical move
- ±47
- Mean absolute change; spread ±86.9
Regular rating in context
United States
#43,341of 83,635 rated members · higher than 48.1%
40,248 lower · 47 same rating · 43,340 higher · ties share a rank
Wisconsin
#602of 961 rated members · higher than 37.2%
358 lower · 2 same rating · 601 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 9,207 within 100 points of 804 (this player included)
800–849: 2,310 members (2.7%) · highlighted band is the player’s · dashed line is the target
50.6% below 850 (42,370 of 83,635; 48.1% below 804)
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 |
|---|---|---|
| Sep 2026 | 804 P+91 · 21 games | 799 P+94 · 21 games |
| Aug 2026 | 713 P+53 · 17 games | 705 P+53 · 17 games |
| Jul 2026 | 660 Pno change · 15 games | 652 Pno change · 15 games |
| Jun 2026 | 660 Pno change · 15 games | 652 Pno change · 15 games |
| May 2026 | 660 Pno change · 15 games | 652 Pno change · 15 games |
| Apr 2026 | 660 P-1 · 15 games | 652 P-1 · 15 games |
| Mar 2026 | 661 P+69 · 15 games | 653 P+73 · 15 games |
| Feb 2026 | 592 P+1 · 15 games | 580 Pno change · 15 games |
| Jan 2026 | 591 P-211 · 10 games | 580 P-210 · 10 games |
| Dec 2025 | 802 P5 games | 790 P5 games |