USCF player statistics

Costello, Alexander John

USCF 14702870CaliforniaUpdated: Oct 2026
Official US Chess record

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Gender
Male
FIDE title
M
FIDE
FIDE 2099659
US Chess reported rank
#260 national · #20 in state
Floor
Regular 2,200 · Quick 2,000 · Blitz 1,900 · Online Regular 100 · Online Quick 2,100
Rated games
Online Regular 25

US Chess record as of Sep 15, 2026

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Rating format

Regular rating

2,373+4 since Sep 2026

Published rating · Oct 2026 · 11 published updates since Dec 2025

Oct 20262,373 Regular
Dec 2025: 2371Jan 2026: 2371Feb 2026: 2371Mar 2026: 2371Apr 2026: 2371May 2026: 2367Jun 2026: 2367Jul 2026: 2369Aug 2026: 2369Sep 2026: 2369Oct 2026: 2373
Dec 2025Oct 2026
11 updates in this window · +2 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

  • -106 Quick vs Regular

    Typical for 2,300–2,399 regular players: -187 (middle half -304 to -104, 198 established members). This gap is within the typical range.

  • -236 Blitz vs Regular

    Typical for 2,300–2,399 regular players: -155 (middle half -256 to -63, 162 established members). This gap is within the typical range.

  • -204 Online Regular vs Regular

    Typical for 2,300–2,399 regular players: -342 (middle half -560 to -172, 81 established members). This gap is within the typical range.

  • -90 Online Quick vs Regular

    Typical for 2,300–2,399 regular players: -380 (middle half -627 to -141, 67 established members). This gap is above the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+4
Sep 2026 to Oct 2026
Biggest drop
-4
Apr 2026 to May 2026
Longest rise
1 update
+4 from Sep 2026 to Oct 2026
Updates that moved
3 of 10
Latest +4, Sep 2026 to Oct 2026
Typical move
±1
Mean absolute change; spread ±2

Regular rating in context

Oct 2026 update

United States

#262of 82,596 rated members · higher than 99.6%

82,332 lower · 3 same rating · 261 higher · ties share a rank

California

#44of 9,083 rated members · higher than 99.5%

9,039 lower · 1 same rating · 43 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 403 within 100 points of 2,373 (this player included)

Player · 2,373
01,4502,900

2,350–2,399: 79 members (0%) · highlighted band is the player’s · dashed line is the target

99.7% below 2,400 (82,368 of 82,596; 99.6% below 2,373)

Percentile over time · United States

99.6% higher than · Oct 2026 · rank #262 of 82,596

Since Dec 2025
0 pts

Dec 2025: higher than 99.6% (rank 263 of 81,102)Jan 2026: higher than 99.6% (rank 259 of 79,487)Feb 2026: higher than 99.6% (rank 270 of 83,940)Mar 2026: higher than 99.6% (rank 264 of 80,605)Apr 2026: higher than 99.6% (rank 263 of 80,831)May 2026: higher than 99.6% (rank 271 of 81,236)Jun 2026: higher than 99.6% (rank 272 of 83,290)Jul 2026: higher than 99.6% (rank 263 of 82,736)Aug 2026: higher than 99.6% (rank 263 of 83,080)Sep 2026: higher than 99.6% (rank 271 of 83,635)Oct 2026: higher than 99.6% (rank 262 of 82,596)
Dec 2025Oct 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 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.

United States statistics California 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 Costello, Alexander John
MonthRegularQuickBlitzOnline RegularOnline Quick
Oct 20262,373+42,267+42,137no change2,169no change2,283no change
Sep 20262,369no change2,263no change2,137no change2,169no change2,283no change
Aug 20262,369no change2,263no change2,137+12,169no change2,283no change
Jul 20262,369+22,263no change2,136no change2,169no change2,283no change
Jun 20262,367no change2,263no change2,136no change2,169no change2,283no change
May 20262,367-42,263no change2,136-102,169no change2,283no change
Apr 20262,371no change2,263no change2,146no change2,169no change2,283no change
Mar 20262,371no change2,263no change2,146no change2,169no change2,283no change
Feb 20262,371no change2,263no change2,146no change2,169no change2,283no change
Jan 20262,371no change2,263no change2,146no change2,169no change2,283no change
Dec 20252,3712,2632,1462,1692,283
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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.