2025 Summer Tuesday Night Marathon - 1600-1999 Round 4-7
31 players participated in this 4-round tournament, held from 29 Jul 2025 to 19 Aug 2025 in San Francisco, CA, United States. 2 federations represented. Top 10 Elo average was 1798, and top seed was Mikhail A Chernobilskiy (🇺🇸 USA, 1936).
Mikhail A Chernobilskiy (🇺🇸 USA, 1936) won with 3.5/4, ahead of Carl A Pickering (3.0) and David Siegel (2.5). Chernobilskiy won solo starting round 3.
The biggest upset came in round 2: Daniel J Sisti (1536) beat David Siegel (1700), a +164-point gap.
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How it unfolded
Top 6 · 4 roundsMikhail A Chernobilskiy led from R3; +0.5-point edge over the runner-up.
Mikhail A Chernobilskiy held the sole lead from R3 through R4 without losing it.
Mikhail A Chernobilskiy won 3 in a row (R1–R3).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Mikhail A Chernobilskiy | * | — | — | 1 |
| 2Carl A Pickering | — | * | — | — |
| 3David Siegel | — | — | * | — |
| 4Hoa Long Tam | 0 | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Chernobilskiy, Mikhail A | 1936 | USA | +19B | +20N | +4B | =13B | 3.5 | 4.5 | 5.5 | 4.75 | 2481 | +11.6 |
| 2 | Pickering, Carl A | 1733 | ENG | +29N | −10N | +28B | +19N | 3.0 | 3.0 | 3.0 | 1.00 | 1807 | +14.8 |
| 3 | Siegel, David | 1700 | USA | =21B | −24N | +22B | +5N | 2.5 | 4.0 | 5.0 | 3.50 | 1757 | +5.6 |
| 4 | Tam, Hoa Long | 1683 | USA | +31B | +16N | −1N | F | 2.0 | 7.0 | 7.0 | 1.50 | 1910 | +17.8 |
| 5 | Stults, Sawyer | 1724 | USA | +7N | −6B | +26N | −3B | 2.0 | 6.5 | 7.5 | 3.00 | 1742 | +2.0 |
| 6 | Kalonaris, Zeno | 1759 | USA | +8B | +5N | −15B | F | 2.0 | 6.0 | 7.5 | 4.00 | 1834 | +5.8 |
| 7 | Mays-Smith, Isaac S | 1868 | USA | −5B | +19N | +8B | −20N | 2.0 | 5.0 | 6.0 | 3.00 | 1677 | -39.2 |
| 8 | Yan, Rayna | 1623 | USA | −6N | +23B | −7N | +28N | 2.0 | 5.0 | 5.0 | 1.00 | 1681 | +12.0 |
| 9 | Perlov, Daniel | 1749 | USA | −14N | +17B | =18N | =15B | 2.0 | 4.5 | 6.0 | 3.00 | 1712 | -2.8 |
| 10 | Morello, Nicholas | 1755 | USA | F | +2B | +20B | F | 2.0 | 4.0 | 4.0 | 4.00 | 2547 | +19.4 |
| 11 | Santiago, Hugo Osmar | 0 | USA | F | +27B | +13N | F | 2.0 | 4.0 | 4.0 | 2.50 | 1839 | 0.0 |
| 12 | Touset, Stephen | 1741 | USA | +22B | +21N | −25B | F | 2.0 | 3.0 | 3.0 | 2.00 | 1832 | +7.4 |
| 13 | Jones, Clarence | 0 | USA | F | +14B | −11B | =1N | 1.5 | 7.5 | 9.0 | 3.25 | 1787 | 0.0 |
| 14 | Liu, Serena | 1601 | USA | +9B | −13N | =17N | F | 1.5 | 5.0 | 5.0 | 2.75 | 1946 | +36.4 |
| 15 | Horgan, Michael G | 1785 | USA | F | F | +6N | =9N | 1.5 | 4.0 | 4.0 | 3.00 | 1947 | +16.8 |
| 16 | Wang, Chase | 1657 | USA | F | −4B | =21N | +22B | 1.5 | 4.0 | 4.0 | 1.50 | 1689 | +2.5 |
| 17 | Admassu, Yonathan | 1756 | USA | F | −9N | =14B | +30N | 1.5 | 3.5 | 3.5 | 0.75 | 1676 | -6.4 |
| 18 | Sevall, Daniel | 0 | USA | F | F | =9B | +25N | 1.5 | 3.0 | 3.0 | 2.00 | 1935 | -7.2 |
| 19 | Agdamag, Samuel | 1605 | USA | −1N | −7B | +23N | −2B | 1.0 | 8.5 | 9.5 | 1.00 | 1595 | -2.4 |
| 20 | Babayan, Gagik | 1757 | USA | F | −1B | −10N | +7B | 1.0 | 7.5 | 7.5 | 2.00 | 1729 | -2.4 |
| 21 | Liu, Jinfeng | 1598 | USA | =3N | −12B | =16B | F | 1.0 | 6.0 | 6.0 | 2.00 | 1579 | -2.0 |
| 22 | Latourette, Nicholas | 1795 | USA | −12N | +28B | −3N | −16N | 1.0 | 6.0 | 6.0 | 0.00 | 1456 | -69.2 |
| 23 | Chan, John | 1607 | USA | +28N | −8N | −19B | −26B | 1.0 | 4.0 | 4.0 | 0.00 | 1394 | -22.2 |
| 24 | Sisti, Daniel J | 1536 | USA | F | +3B | F | F | 1.0 | 3.5 | 3.5 | 2.50 | 2504 | +28.8 |
| 25 | Schaezlein, Charlie | 1718 | USA | F | F | +12N | −18B | 1.0 | 3.5 | 3.5 | 2.00 | 2541 | +10.2 |
| 26 | Horde, Nicolas T | 1634 | USA | F | F | −5B | +23N | 1.0 | 3.0 | 3.0 | 1.00 | 1666 | +1.6 |
| 27 | Argo, Guy | 1819 | USA | +30B | −11N | F | F | 1.0 | 3.0 | 3.0 | 0.00 | 2483 | +6.4 |
| 28 | Casares, Nick | 1487 | USA | −23B | −22N | −2N | −8B | 0.0 | 6.0 | 7.0 | 0.00 | 890 | -19.6 |
| 29 | Ni, Tao | 1610 | USA | −2B | F | F | F | 0.0 | 3.0 | 3.0 | 0.00 | 936 | -6.6 |
| 30 | Ploquin, Phil | 1683 | USA | −27N | F | F | −17B | 0.0 | 2.5 | 2.5 | 0.00 | 988 | -14.4 |
| 31 | Dutter, Frederic | 1751 | USA | −4N | F | F | F | 0.0 | 2.0 | 2.0 | 0.00 | 881 | -12.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Liu, SerenaUSA+36.41.5 pts · #11
- 2Sisti, Daniel JUSA+28.81.0 pts · #18
- 3Morello, NicholasUSA+19.42.0 pts · #6
- 1Latourette, NicholasUSA-69.21.0 pts · #27
- 2Mays-Smith, Isaac SUSA-39.22.0 pts · #7
- 3Chan, JohnUSA-22.21.0 pts · #23
- R2+164 Elo gap
- R1+148 Elo gap
- R1+144 Elo gap