USCF player statistics
Seo, Ian
Official US Chess record- FIDE
- FIDE 13221000
Regular rating
Provisional rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
+16 Quick vs Regular (provisional)
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +1
- Jul 2026 to Aug 2026
- Biggest drop
- -1
- Aug 2026 to Sep 2026
- Longest rise
- 1 update
- +1 from Jul 2026 to Aug 2026
- Updates that moved
- 2 of 9
- Latest -1, Aug 2026 to Sep 2026
- Typical move
- ±0
- Mean absolute change; spread ±0.5
Regular rating in context
United States
32.5%of the comparison population has a lower rating.
27,194 lower · 60 same rating · 56,381 higher
Massachusetts
20.2%of the comparison population has a lower rating.
339 lower · 0 same rating · 1,338 higher
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 10,880 within 100 points of 544
500–549: 2,741 members (3.2%) · highlighted band is the player’s · dashed line is the target
32.8% below 550 (27,504 of 83,635; 32.5% below 544)
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: it is a rating comparison, not a prediction of future rank. This player is outside that comparison population; no membership rank is assigned.
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 | 544 P-1 · 12 games | 560 Pno change · 12 games |
| Aug 2026 | 545 P+1 · 12 games | 560 Pno change · 12 games |
| Jul 2026 | 544 Pno change · 12 games | 560 Pno change · 12 games |
| Jun 2026 | 544 Pno change · 12 games | 560 Pno change · 12 games |
| May 2026 | 544 Pno change · 12 games | 560 Pno change · 12 games |
| Apr 2026 | 544 Pno change · 12 games | 560 Pno change · 12 games |
| Mar 2026 | 544 Pno change · 12 games | 560 Pno change · 12 games |
| Feb 2026 | 544 Pno change · 12 games | 560 Pno change · 12 games |
| Jan 2026 | 544 Pno change · 12 games | 560 Pno change · 12 games |
| Dec 2025 | 544 P12 games | 560 P12 games |