USCF player statistics
Sun, Tianze
Official US Chess recordRegular rating
Published rating · Sep 2026 · 10 published updates since Dec 2025
Other formats against Regular
-9 Quick vs Regular
No national baseline for this rating band yet.
-268 Blitz vs Regular
No national baseline for this rating band yet.
How this rating moves
Between consecutive published observations, provisional included.
- Biggest gain
- +155
- Apr 2026 to May 2026
- Biggest drop
- -195
- May 2026 to Jun 2026
- Longest rise
- 2 updates
- +141 from Dec 2025 to Feb 2026
- Current run
- 3 updates
- Unchanged since Jun 2026
- Typical move
- ±59
- Mean absolute change; spread ±96.3
Regular rating in context
United States
#42,340of 83,635 rated members · higher than 49.3%
41,264 lower · 32 same rating · 42,339 higher · ties share a rank
Arizona
#911of 1,686 rated members · higher than 45.9%
774 lower · 2 same rating · 910 higher · ties share a rank
Where this rating sits · United States
83,635 rated members in 50-point bands · median 800–849 · 9,054 within 100 points of 826 (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; 49.3% below 826)
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 | 826no change | 817no change | 558no change |
| Aug 2026 | 826no change | 817no change | 558no change |
| Jul 2026 | 826no change | 817no change | 558no change |
| Jun 2026 | 826-195 | 817-195 | 558-56 |
| May 2026 | 1,021+155 | 1,012+157 | 614+2 |
| Apr 2026 | 866no change | 855no change | 612no change |
| Mar 2026 | 866-40 | 855-46 | 612-40 |
| Feb 2026 | 906+93 | 901+97 | 652-29 |
| Jan 2026 | 813+48 | 804+51 | 681 Pno change · 22 games |
| Dec 2025 | 765 | 753 | 681 P22 games |