CChessStats

2026 New Years Tuesday Night Marathon - 2000 and Over Round 4-7

Open SwissStandard

22 players participated in this 4-round tournament, held from 27 Jan 2026 to 17 Feb 2026 in San Francisco, CA, United States. 2 titled players from 2 federations. Top 10 Elo average was 1950, and top seed was Jimmy Heiserman (🇺🇸 USA, 2138).

Jeremy David Cawthon (🇺🇸 USA, 1908) won with 3.5/4, ahead of Elliott Winslow (3.5) and Jimmy Heiserman (3.0). Cawthon won on tie-break after catching the field in the final round.

The biggest upset came in round 3: Daniel Sevall (1851) beat Olivia Smith (WFM, 2091), a +240-point gap.

Location
🇺🇸San Francisco, CA, United States
Dates
27 Jan 2026 → 17 Feb 2026
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 4 rounds
Top seed
🇺🇸Jimmy Heiserman2138
Avg top 10
1,950
Participants
22
Titled players · 2
IM×1
WFM×1
Federations · 2 represented
🇺🇸United States of America×21
🇬🇧Wales×1
Top 3

How it unfolded

Top 6 · 4 rounds

Tight race until R4; 2 players tied at 3.5/4, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.

Co-leaders
8
2
1
2
1234R1R2R3R4
R4 · TIEBREAK CLUSTER

2 players finish on 3.5/4. Cawthon takes the title on Buchholz Cut1 (8.5).

R2 · HEAD-TO-HEAD · WINNER VS 2ND

Jeremy David Cawthon drew with IM Elliott Winslow (White).

R1–R3 · WIN STREAK

Jimmy Heiserman won 3 in a row (R1–R3).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Jeremy David Cawthon*
½
1
2IMElliott Winslow
½
*
3Jimmy Heiserman
0
*
4Phineas F Horowitz*

Grille américaine

#PlayerEloFedR1R2R3R4PtsBu C1BuSBPerfΔ
1Cawthon, Jeremy David1908USA+21N=2B+8N+3N3.58.58.56.752274+33.0
2Winslow, ElliottIM1965USA+16B=1N+7B+6N3.57.58.56.752226+21.8
3Heiserman, Jimmy2138USA+6N+9B+16N1B3.07.58.55.002069-5.2
4Horowitz, Phineas F1848USA=10B+22N+18B=5N3.05.55.53.252045+20.2
5Clemens, Kristian1876USA+22B13N+9N=4B2.56.56.53.501911+3.6
6Parsons, Stephen1857USA3B+14N+13B2B2.08.09.53.001928+7.0
7Lewis, Edward1829USA+12B+11B2N8B2.07.59.54.001861+3.4
8Chen, Qinhong1917USA9B+17N1B+7N2.07.58.53.001815-10.8
9Viadiu-Ilarraza, Hector1774USA+8N3N5B+19B2.07.58.53.001926+14.6
10Sevall, Daniel1851USA=4NF+20B=11B2.06.06.03.502050+15.6
11Mercado, Adam1836USA=14B7N+21B=10N2.05.55.51.751787-5.4
12Hasteer, Divija1726USA7N18N+22B+21N2.03.03.00.001810+18.0
13Walder, Michael1873USA20N+5B6N=15B1.56.07.03.251816-7.2
14Rigel, Marlon1737USA=11N6B19N+17B1.55.06.02.001717-2.6
15Kulkarni, Neil1788USAFF+17B=13N1.52.52.51.752004+22.8
16Diller, Bradley R1964USA2N+20B3BF1.07.57.51.001940-2.0
17Admassu, Yonathan1749USA+19B8B15N14N1.05.06.01.001611-14.4
18Steger, Eric1909USAF+12B4NF1.05.05.02.001787-6.4
19Melville, Cailen1774USA17NF+14B9N1.04.54.51.501628-11.6
20Smith, OliviaWFM2091WLS+13B16N10NF1.04.54.51.501771-25.0
21Rajaram, Raghu1732USA1BF11N12B0.07.59.50.001023-22.8
22Perlov, Daniel1770USA5N4B12NF0.07.57.50.001017-26.2

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets