USCF player statistics

Arnold, Ken L

USCF 12538347CaliforniaUpdated: Oct 2026
Official US Chess record

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Gender
Male
FIDE
FIDE 2056836
Floor
Regular 2,200 · Quick 2,100 · Blitz 2,100 · Online Quick 2,000 · Online Blitz 2,100

US Chess record as of Sep 15, 2026

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Rating format

Regular rating

2,3780 since Sep 2026

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

Oct 20262,378 Regular
Dec 2025: 2378Jan 2026: 2378Feb 2026: 2378Mar 2026: 2378Apr 2026: 2378May 2026: 2378Jun 2026: 2378Jul 2026: 2378Aug 2026: 2378Sep 2026: 2378Oct 2026: 2378
Dec 2025Oct 2026
11 updates in this window · 0 first to last · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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

  • -64 Quick vs Regular

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

  • +2 Blitz vs Regular

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

  • -316 Online Quick vs Regular

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

  • -262 Online Blitz vs Regular

    Typical for 2,300–2,399 regular players: -212 (middle half -440 to -122, 54 established members). This gap is within the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
—
No gain between published updates yet
Biggest drop
—
No drop between published updates yet
Longest rise
—
No consecutive gains yet
Current run
10 updates
Unchanged since Dec 2025
Typical move
±0
Mean absolute change; spread ±0

Regular rating in context

Oct 2026 update

United States

#253of 82,596 rated members · higher than 99.6%

82,342 lower · 2 same rating · 252 higher · ties share a rank

California

#43of 9,083 rated members · higher than 99.5%

9,040 lower · 1 same rating · 42 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 394 within 100 points of 2,378 (this player included)

Player · 2,378
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 2,378)

Percentile over time · United States

99.6% higher than · Oct 2026 · rank #253 of 82,596

Since Dec 2025
0 pts

Dec 2025: higher than 99.6% (rank 247 of 81,102)Jan 2026: higher than 99.6% (rank 243 of 79,487)Feb 2026: higher than 99.6% (rank 257 of 83,940)Mar 2026: higher than 99.6% (rank 252 of 80,605)Apr 2026: higher than 99.6% (rank 250 of 80,831)May 2026: higher than 99.6% (rank 252 of 81,236)Jun 2026: higher than 99.6% (rank 251 of 83,290)Jul 2026: higher than 99.6% (rank 249 of 82,736)Aug 2026: higher than 99.7% (rank 245 of 83,080)Sep 2026: higher than 99.6% (rank 253 of 83,635)Oct 2026: higher than 99.6% (rank 253 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 Arnold, Ken L
MonthRegularQuickBlitzOnline QuickOnline Blitz
Oct 20262,378no change2,314no change2,380no change2,062no change2,116+5
Sep 20262,378no change2,314no change2,380no change2,062no change2,111-67
Aug 20262,378no change2,314no change2,380no change2,062no change2,178+29
Jul 20262,378no change2,314no change2,380no change2,062no change2,149+41
Jun 20262,378no change2,314no change2,380no change2,062no change2,108-14
May 20262,378no change2,314no change2,380no change2,062no change2,122-1
Apr 20262,378no change2,314no change2,380no change2,062no change2,123-32
Mar 20262,378no change2,314no change2,380no change2,062no change2,155-11
Feb 20262,378no change2,314no change2,380no change2,062no change2,166+10
Jan 20262,378no change2,314no change2,380no change2,062no change2,156-20
Dec 20252,3782,3142,3802,0622,176
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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.