USCF player statistics

Underkofler, Lydia

USCF 33063297South DakotaUpdated: Oct 2026

Official US Chess record

Gender: Female
US Chess reported rank: #44,551 national · #110 in state
Floor: Regular 109 · Quick 109
Rated games: Regular 5 · Quick 5

US Chess record as of Sep 18, 2026

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Regular rating

605

Provisional rating · Oct 2026 · 5 published updates since Jun 2026

Oct 2026605 provisional

Compare format

May 2026Oct 2026

6 updates in this window · open points are provisional · guides mark US Chess classes · unpublished months are skipped, not inactivity

Compare with another playerOverlays their published ratings on the chart; the link keeps the comparison.

Other formats against Regular

-21 Quick vs Regular (provisional)
Typical for 600–699 regular players: -4 (middle half -17 to +9, 2,385 established members). This gap is below 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: 4 updates; Unchanged since Jun 2026
Typical move: ±0; Mean absolute change; spread ±0

Regular rating in context

Oct 2026 update

United States

#52,788of 82,596 rated members · higher than 36%

29,747 lower · 62 same rating · 52,787 higher · ties share a rank

South Dakota

#126of 172 rated members · higher than 26.7%

46 lower · 1 same rating · 125 higher · ties share a rank

Where this rating sits · United States

82,596 rated members in 50-point bands · median 800–849 · 10,368 within 100 points of 605 (this player included)

Player · 605

01,4502,900

600–649: 2,612 members (3.1%) · highlighted band is the player’s · dashed line is the target

Target 650

38.8% below 650 (32,072 of 82,596; 36% below 605)

Percentile over time · United States

36% higher than · Oct 2026 · rank #52,788 of 82,596

Since Jun 2026
-0.4 pts

Jun 2026Oct 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 South Dakota 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 Underkofler, Lydia
Month	Regular	Quick
Oct 2026	605 Pno change · 5 games	584 Pno change · 5 games
Sep 2026	605 Pno change · 5 games	584 Pno change · 5 games
Aug 2026	605 Pno change · 5 games	584 Pno change · 5 games
Jul 2026	605 Pno change · 5 games	584 Pno change · 5 games
Jun 2026	605 P5 games	584 P5 games
May 2026	—	—

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