CChessStats

2025 Summer Tuesday Night Marathon - 1600-1999 Round 1-3

Open SwissStandard

29 players participated in this 3-round tournament, held from 08 Jul 2025 to 22 Jul 2025 in San Francisco, CA, United States. 3 federations represented. Top 10 Elo average was 1784, and top seed was Mikhail A Chernobilskiy (🇺🇸 USA, 1936).

Clarence Jones (🇺🇸 USA, 0) won with 3.0/3, ahead of Phil Ploquin (2.5) and Daniel Sevall (2.5). Jones broke clear in the final round.

The biggest upset came in round 1: Michael G Horgan (1785) beat Mikhail A Chernobilskiy (1936), a +151-point gap.

Location
🇺🇸San Francisco, CA, United States
Dates
08 Jul 2025 → 22 Jul 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 3 rounds
Top seed
🇺🇸Mikhail A Chernobilskiy1936
Avg top 10
1,784
Participants
29
Federations · 3 represented
🇺🇸United States of America×27
🇬🇧England×1
🇩🇪Germany×1
Top 3

How it unfolded

Top 6 · 3 rounds

Clarence Jones led from R3; +0.5-point edge over the runner-up.

Co-leaders
10
3
1
11.52.53R1R2R3
Jones3Sevall2.5Ploquin2.5Horgan2Schaezlein2Perlov2
R3–R3 · LEAD HELD

Clarence Jones held the sole lead from R3 through R3 without losing it.

R1–R3 · WIN STREAK

Clarence Jones won 3 in a row (R1–R3).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Clarence Jones*——
1
2Daniel Sevall—*——
3Phil Ploquin——*—
4Michael G Horgan
0
——*

Grille américaine

#PlayerEloFedR1R2R3PtsBu C1BuSBPerfΔ
1Jones, Clarence0USA+25N+4B+10N3.03.53.53.5017750.0
2Ploquin, Phil1683USA+12B=10B+18N2.53.04.03.251982+22.2
3Sevall, Daniel0USA=23N+?B+?N2.50.50.50.2518020.0
4Horgan, Michael G1785USA+13B−1N+28B2.04.54.51.502703+52.8
5Schaezlein, Charlie1718USA+11B−6N+16B2.03.54.52.501880+11.6
6Perlov, Daniel1749USA+14N+5BF2.03.53.53.502470+15.8
7Santiago, Hugo Osmar0USAF+17B+8N2.03.03.03.0017510.0
8Admassu, Yonathan1756USA+27B+16N−7B2.03.03.01.002423+13.4
9Liu, Serena1601USAF+26N+20B2.01.01.01.002445+45.6
10Dutter, Frederic1751USA+19B=2N−1B1.55.56.52.251905+7.6
11Babayan, Gagik1757USA−5N=14B+23N1.53.54.01.251692-5.2
12Siegel, David1700USA−2N+19N=24B1.53.54.01.251681-4.0
13Chernobilskiy, Mikhail A1936USA−4N+25B=15N1.53.53.50.751661-19.2
14Agdamag, Samuel1605USA−6B=11N+26B1.53.53.50.751705+7.8
15Liu, Jinfeng1598USAF+21N=13B1.52.52.51.752023+42.8
16Kalonaris, Zeno1759USA+22N−8B−5N1.04.05.01.001550-16.2
17Wang, Chase1657USA+21B−7NF1.03.03.01.002524+23.2
18Uzakbaev, Nursultan1669USA+24NF−2B1.03.03.00.501652-1.0
19Touset, Stephen1741USA−10N−12B+25N1.03.03.00.001563-14.2
20Tam, Hoa Long1683USAF+23B−9N1.02.52.50.501667-0.8
21Stults, Sawyer1724USA−17N−15B+27B1.02.52.50.001456-21.2
22Sisti, Daniel J1536USA−16B+27NF1.01.01.00.001623+8.4
23Pickering, Carl A1733ENG=3B−20N−11B0.54.05.01.25919-42.0
24Yan, Rayna1624USA−18BF=12N0.52.52.50.751494-12.4
25Chan, John1607USA−1B−13N−19B0.04.55.50.001039-9.0
26Ni, Tao1609USAF−9B−14N0.03.53.50.00802-20.4
27Casares, Nick1487USA−8N−22B−21N0.03.04.00.00872-16.0
28Mays-Smith, Isaac S1868USAFF−4N0.02.02.00.00984-24.8
29Tsebrii, Maksym0GERFF−?B0.00.00.00.0010190.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets