USCF player statistics
Mattos, Roberto M
Official US Chess recordQuick rating
Provisional rating · Sep 2026
Sep 2026
883 provisional
The comparison field
Quick rating in context
United States
of the comparison population has a lower rating.
Where this rating sits
79,019 rated members · 50-point bands
Median falls in
750–799
9,235 members have ratings within 100 points of 883.
Highlighted band: player rating · Dashed line: target rating
850–899: 2,320 members (2.9%). Select a band to explore the distribution.
Explore a target rating
Compare a rating with this published population.
58.1% have ratings below 900.
45,950 of 79,019 members. At 883, the figure is 57.1%.
The population stays fixed. This is a rating comparison, not a prediction of future rank or results.
How these comparisons are calculated
Calculated from the Sep 2026 supplement, using the same population as Chess67’s USCF statistics: US members classified as active by the supplement rules, excluding lifetime-coded records. Includes provisional ratings. These are Chess67 calculations, not official US Chess rankings. “Lower” is strictly lower; ties share a rank. National and state groups overlap. This player is outside that comparison population; no membership rank is assigned.
Published ratings by supplement
All available formats. P indicates a provisional rating.
| Supplement | Quick |
|---|---|
| Sep 2026 | 883 P |
| Aug 2026 | 883 P |
| Jul 2026 | 883 P |
| Jun 2026 | 883 P |
| May 2026 | 883 P |
| Apr 2026 | 883 P |
| Mar 2026 | 883 P |
| Feb 2026 | 883 P |
| Jan 2026 | 883 P |
| Dec 2025 | 883 P |
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