USCF player statistics

Rostro, Isaiah Santiago

USCF 16138435TexasUpdated: Nov 2026
Official US Chess record

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Gender
Male
US Chess reported rank
#17,529 national · #1,517 in state
Floor
Regular 150 · Quick 150 · Online Regular 100
Rated games
Online Regular 12

US Chess record as of Sep 15, 2026

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Rating format

Regular rating

1,397+103 since Oct 2026

Published rating · Nov 2026 · 12 published updates since Dec 2025

Nov 20261,397 Regular
Dec 2025: 1231Jan 2026: 1259Feb 2026: 1331Mar 2026: 1271Apr 2026: 1291May 2026: 1322Jun 2026: 1322Jul 2026: 1322Aug 2026: 1322Sep 2026: 1322Oct 2026: 1294Nov 2026: 1397
Dec 2025Nov 2026
12 updates in this window · +166 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity
Overlays their published ratings on the chart; the link keeps the comparison.

Other formats against Regular

  • +37 Quick vs Regular

    Typical for 1,300–1,399 regular players: -69 (middle half -132 to -27, 2,026 established members). This gap is above the typical range.

  • -58 Online Regular vs Regular (provisional)

    Typical for 1,300–1,399 regular players: -262 (middle half -417 to -114, 187 established members). This gap is above the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+103
Oct 2026 to Nov 2026
Biggest drop
-60
Feb 2026 to Mar 2026
Longest rise
2 updates
+100 from Dec 2025 to Feb 2026
Updates that moved
7 of 11
Latest +103, Oct 2026 to Nov 2026
Typical move
±31
Mean absolute change; spread ±44.5

Regular rating in context

Nov 2026 update

United States

#20,982of 83,032 rated members · higher than 74.6%

62,013 lower · 38 same rating · 20,981 higher · ties share a rank

Texas

#1,636of 10,533 rated members · higher than 84.4%

8,893 lower · 5 same rating · 1,635 higher · ties share a rank

Where this rating sits · United States

83,032 rated members in 50-point bands · median 850–899 · 6,944 within 100 points of 1,397 (this player included)

Player · 1,397
01,4252,850

1,350–1,399: 1,656 members (1.9%) · highlighted band is the player’s · dashed line is the target

74.8% below 1,400 (62,111 of 83,032; 74.6% below 1,397)

Percentile over time · United States

74.6% higher than · Nov 2026 · rank #20,982 of 83,032

Since Dec 2025
+6.5 pts

Dec 2025: higher than 68.1% (rank 25,807 of 81,102)Jan 2026: higher than 68.8% (rank 24,748 of 79,487)Feb 2026: higher than 72.1% (rank 23,345 of 83,940)Mar 2026: higher than 69.3% (rank 24,702 of 80,605)Apr 2026: higher than 70.3% (rank 23,968 of 80,831)May 2026: higher than 71.6% (rank 22,982 of 81,236)Jun 2026: higher than 72.1% (rank 23,159 of 83,290)Jul 2026: higher than 72.2% (rank 22,888 of 82,736)Aug 2026: higher than 72.2% (rank 23,033 of 83,080)Sep 2026: higher than 72.1% (rank 23,238 of 83,635)Oct 2026: higher than 70.4% (rank 24,336 of 82,596)Nov 2026: higher than 74.6% (rank 20,982 of 83,032)
Dec 2025Nov 2026
Each month against that month’s active pool, so pool growth and rating drift both count.
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, with this player at their recorded rating: it is a rating comparison, not a prediction of future rank.

United States statistics Texas statistics

Published ratings by month

P marks a provisional rating; the small figure is the change since the previous published observation.

Monthly USCF ratings for Rostro, Isaiah Santiago
MonthRegularQuickOnline Regular
Nov 20261,397+1031,434+1331,339 Pno change · 12 games
Oct 20261,294-281,301-121,339 Pno change · 12 games
Sep 20261,322no change1,313no change1,339 Pno change · 12 games
Aug 20261,322no change1,313no change1,339 P-1 · 12 games
Jul 20261,322no change1,313no change1,340 P+1 · 12 games
Jun 20261,322no change1,313no change1,339 P12 games
May 20261,322+311,313no change—
Apr 20261,291+201,313+14—
Mar 20261,271-601,299-61—
Feb 20261,331+721,360+74—
Jan 20261,259+281,286+25—
Dec 20251,2311,261—
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About these statistics. Built from the monthly USCF rating updates available to Chess67. Ratings change between publications, and a missing month is not inactivity. The official US Chess record has current ratings and tournament history.