USCF player statistics
Koo, Minjun
- Gender
- Male
- FIDE
- FIDE 13209345
- US Chess reported rank
- #2,203
- Floor
- Regular 128 · Blitz 1,700
- Rated games
- Regular 20
US Chess record as of Sep 18, 2026
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +36
- Jul 2026 to Aug 2026
- Biggest drop
- —
- No drop between published updates yet
- Longest rise
- 1 update
- +36 from Jul 2026 to Aug 2026
- Current run
- 3 updates
- Unchanged since Aug 2026
- Typical move
- ±9
- Mean absolute change; spread ±18
Regular rating in context
United States
96.6%of the comparison population has a lower rating.
80,225 lower · 16 same rating · 2,791 higher
Where this rating sits · United States
83,032 rated members in 50-point bands · median 850–899 · 2,966 within 100 points of 2,023
2,000–2,049: 874 members (1%) · highlighted band is the player’s · dashed line is the target
97% below 2,050 (80,594 of 83,032; 96.6% below 2,023)
Percentile over time · United States
96.6% higher than · Nov 2026 · rank #2,792 of 83,032
Since Jul 2026
+0.7 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: 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 | Blitz |
|---|---|---|
| Nov 2026 | 2,023 Pno change · 20 games | 1,984no change |
| Oct 2026 | 2,023 Pno change · 20 games | 1,984no change |
| Sep 2026 | 2,023 Pno change · 20 games | 1,984no change |
| Aug 2026 | 2,023 P+36 · 20 games | 1,984+27 |
| Jul 2026 | 1,987 P11 games | 1,957 P20 games |
| Jun 2026 | — | — |