USCF player statistics

Pernik, Jeff

USCF 13754691CaliforniaUpdated: Nov 2026
Official US Chess record

Enter an 8-digit USCF ID, or at least 3 letters of a name. Similar names in CA appear first.

Gender
Male
FIDE
FIDE 0
TD
Club
Floor
Online Regular 100 · Online Quick 100 · Online Blitz 100
Rated games
Online Quick 20 · Online Blitz 17

US Chess record as of Sep 15, 2026

Find USCF-rated tournamentsBrowse upcoming events and entry requirements.
Rating format

Online Regular rating

9640 since Oct 2026

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

Nov 2026964 Online Regular
Dec 2025: 1209 provisionalJan 2026: 1085 provisionalFeb 2026: 886Mar 2026: 884Apr 2026: 883May 2026: 884Jun 2026: 991Jul 2026: 986Aug 2026: 986Sep 2026: 964Oct 2026: 964Nov 2026: 964
Dec 2025Nov 2026
12 updates in this window · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity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 Online Regular

  • +226 Online Quick vs Online Regular (provisional)

    Typical for 900–999 online regular players: +47 (middle half -86 to +144, 91 established members). This gap is above the typical range.

  • +70 Online Blitz vs Online Regular (provisional)

    Typical for 900–999 online regular players: +210 (middle half -46 to +438, 40 established members). This gap is within the typical range.

How this rating moves

Between consecutive published observations, provisional included.

Biggest gain
+107
May 2026 to Jun 2026
Biggest drop
-199
Jan 2026 to Feb 2026
Longest rise
2 updates
+108 from Apr 2026 to Jun 2026
Current run
2 updates
Unchanged since Sep 2026
Typical move
±42
Mean absolute change; spread ±78.4

Online Regular rating in context

Nov 2026 update

United States

#4,843of 8,136 rated members · higher than 40.4%

3,289 lower · 5 same rating · 4,842 higher · ties share a rank

California

#667of 1,056 rated members · higher than 36.8%

389 lower · 1 same rating · 666 higher · ties share a rank

Where this rating sits · United States

8,136 rated members in 50-point bands · median 1,050–1,099 · 1,177 within 100 points of 964 (this player included)

Player · 964
01,4752,950

950–999: 287 members (3.5%) · highlighted band is the player’s · dashed line is the target

42.9% below 1,000 (3,492 of 8,136; 40.4% below 964)

Percentile over time · United States

40.4% higher than · Nov 2026 · rank #4,843 of 8,136

Since Dec 2025
-19.6 pts

Dec 2025: higher than 60% (rank 3,420 of 8,569)Jan 2026: higher than 51.4% (rank 4,110 of 8,482)Feb 2026: higher than 36.8% (rank 5,531 of 8,778)Mar 2026: higher than 36.1% (rank 5,322 of 8,345)Apr 2026: higher than 35.5% (rank 5,249 of 8,145)May 2026: higher than 35.3% (rank 5,260 of 8,144)Jun 2026: higher than 42.9% (rank 4,675 of 8,202)Jul 2026: higher than 42.3% (rank 4,663 of 8,094)Aug 2026: higher than 42.3% (rank 4,644 of 8,069)Sep 2026: higher than 40.5% (rank 4,831 of 8,137)Oct 2026: higher than 40.5% (rank 4,814 of 8,107)Nov 2026: higher than 40.4% (rank 4,843 of 8,136)
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 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 Pernik, Jeff
MonthOnline RegularOnline QuickOnline Blitz
Nov 2026964no change1,190 Pno change · 20 games1,034 Pno change · 17 games
Oct 2026964no change1,190 Pno change · 20 games1,034 Pno change · 17 games
Sep 2026964-221,190 Pno change · 20 games1,034 Pno change · 17 games
Aug 2026986no change1,190 Pno change · 20 games1,034 Pno change · 17 games
Jul 2026986-51,190 Pno change · 20 games1,034 Pno change · 17 games
Jun 2026991+1071,190 Pno change · 20 games1,034 Pno change · 17 games
May 2026884+11,190 Pno change · 20 games1,034 Pno change · 17 games
Apr 2026883-11,190 P+42 · 20 games1,034 Pno change · 17 games
Mar 2026884-21,148 P+1 · 17 games1,034 P-1 · 17 games
Feb 2026886-1991,147 P+5 · 17 games1,035 P17 games
Jan 20261,085 P-124 · 17 games1,142 P13 games—
Dec 20251,209 P10 games——
Chess67 DiscordChat with the Chess67 community.Open Find a chess tournamentUpcoming events near you.Browse Find a chess clubClubs and meetups near you.Browse

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.