USCF player statistics
Xu, Mark
- Gender
- Male
- FIDE
- FIDE 39963098
- US Chess reported rank
- #8,662 national · #386 in state
- Floor
- Regular 1,500 · Quick 1,300 · Blitz 150 · Online Regular 100
- Rated games
- Online Regular 8
US Chess record as of Sep 15, 2026
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +64
- Apr 2026 to May 2026
- Biggest drop
- -57
- Jun 2026 to Jul 2026
- Longest rise
- 3 updates
- +121 from Mar 2026 to Jun 2026
- Updates that moved
- 10 of 10
- Latest -39, Sep 2026 to Oct 2026
- Typical move
- ±36
- Mean absolute change; spread ±40.5
Regular rating in context
United States
#12,886of 82,596 rated members · higher than 84.3%
69,676 lower · 35 same rating · 12,885 higher · ties share a rank
New Jersey
#557of 3,069 rated members · higher than 81.6%
2,506 lower · 7 same rating · 556 higher · ties share a rank
Where this rating sits · United States
82,596 rated members in 50-point bands · median 800–849 · 6,630 within 100 points of 1,626 (this player included)
1,600–1,649: 1,851 members (2.2%) · highlighted band is the player’s · dashed line is the target
85.2% below 1,650 (70,433 of 82,596; 84.3% below 1,626)
Percentile over time · United States
84.3% higher than · Oct 2026 · rank #12,886 of 82,596
Since Dec 2025
-3.5 pts
How these comparisons are calculated
Chess67 calculations from the Oct 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 | Online Regular |
|---|---|---|---|---|
| Oct 2026 | 1,626-39 | 1,484no change | 1,357no change | 376 Pno change · 8 games |
| Sep 2026 | 1,665+16 | 1,484no change | 1,357+23 | 376 Pno change · 8 games |
| Aug 2026 | 1,649-25 | 1,484no change | 1,334no change | 376 Pno change · 8 games |
| Jul 2026 | 1,674-57 | 1,484-17 | 1,334no change | 376 Pno change · 8 games |
| Jun 2026 | 1,731+13 | 1,501+32 | 1,334+21 | 376 Pno change · 8 games |
| May 2026 | 1,718+64 | 1,469no change | 1,313no change | 376 Pno change · 8 games |
| Apr 2026 | 1,654+44 | 1,469-10 | 1,313no change | 376 Pno change · 8 games |
| Mar 2026 | 1,610-41 | 1,479-12 | 1,313no change | 376 Pno change · 8 games |
| Feb 2026 | 1,651-31 | 1,491no change | 1,313+18 | 376 Pno change · 8 games |
| Jan 2026 | 1,682-33 | 1,491-25 | 1,295no change | 376 Pno change · 8 games |
| Dec 2025 | 1,715 | 1,516 | 1,295 | 376 P8 games |