2025 2nd Silman Tuesday Night Marathon - 1600-1999 Round 4-7
Open SwissStandard
21 players participated in this 4-round tournament, held from 27 May 2025 to 17 Jun 2025 in San Francisco, CA, United States. 3 federations represented. Top 10 Elo average was 1788, and top seed was Isaac S Mays-Smith (🇺🇸 USA, 1878).
Frederic Dutter (🇺🇸 USA, 1734) won with 3.5/4, ahead of Rayna Yan (3.0) and Sawyer Stults (3.0). Dutter won solo starting round 3.
The biggest upset came in round 2: Orynbay Zhanaidarov (1456) beat Michael Abraham (1743), a +287-point gap.
Location
🇺🇸San Francisco, CA, United States
Dates
27 May 2025 → 17 Jun 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 4 rounds
Federations · 3 represented
🇺🇸United States of America×19
🇰🇿Kazakhstan×1
🇬🇧England×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 4 roundsFrederic Dutter led from R3; +0.5-point edge over the runner-up.
Co-leaders
8
2
1
1
R3–R4 · LEAD HELD
Frederic Dutter held the sole lead from R3 through R4 without losing it.
R1–R3 · WIN STREAK
Frederic Dutter won 3 in a row (R1–R3).
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Dutter, Frederic | 1734 | USA | +20B | +13N | +5B | =14N | 3.5 | 4.0 | 4.0 | 3.50 | 2039 | +26.6 |
| 2 | Yan, Rayna | 1671 | USA | +6B | −7N | +15B | +4N | 3.0 | 6.0 | 7.0 | 5.00 | 1927 | +54.0 |
| 3 | Stults, Sawyer | 1733 | USA | +17B | +21N | −4B | +20N | 3.0 | 3.0 | 3.0 | 1.00 | 1853 | +12.6 |
| 4 | Babayan, Gagik | 1767 | USA | +5N | −8B | +3N | −2B | 2.0 | 8.0 | 10.0 | 5.00 | 1752 | -1.8 |
| 5 | Touset, Stephen | 1733 | USA | −4B | +9B | −1N | +16B | 2.0 | 7.5 | 8.5 | 3.00 | 1730 | -0.2 |
| 6 | Pickering, Carl A | 1683 | ENG | −2N | +11B | +13B | −9N | 2.0 | 6.5 | 7.5 | 2.50 | 1669 | -3.2 |
| 7 | Admassu, Yonathan | 1718 | USA | −10N | +2B | F | +8N | 2.0 | 6.5 | 6.5 | 5.00 | 1931 | +16.8 |
| 8 | Marvin, Hayes Alexander | 1870 | USA | F | +4N | +10N | −7B | 2.0 | 5.5 | 5.5 | 3.50 | 1913 | +6.8 |
| 9 | Chan, John | 1596 | USA | +21B | −5N | F | +6B | 2.0 | 4.0 | 4.0 | 2.00 | 1770 | +13.8 |
| 10 | Mays-Smith, Isaac S | 1878 | USA | +7B | =14N | −8B | F | 1.5 | 5.0 | 5.0 | 2.50 | 1750 | -19.6 |
| 11 | Siegel, David | 1734 | USA | F | −6N | =12N | +18B | 1.5 | 4.5 | 4.5 | 1.75 | 1633 | -14.4 |
| 12 | Zhanaidarov, Orynbay | 1456 | KAZ | F | +20N | =11B | F | 1.5 | 1.5 | 1.5 | 0.75 | 1932 | +23.4 |
| 13 | Tam, Hoa Long | 1673 | USA | +15N | −1B | −6N | F | 1.0 | 6.5 | 6.5 | 1.00 | 1603 | -5.6 |
| 14 | Ploquin, Phil | 1663 | USA | F | =10B | F | =1B | 1.0 | 5.0 | 5.0 | 2.50 | 1806 | +7.4 |
| 15 | Boyer, John | 1766 | USA | −13B | +19B | −2N | F | 1.0 | 5.0 | 5.0 | 1.00 | 1591 | -14.2 |
| 16 | Smith, Robert | 1823 | USA | −19N | +18B | F | −5N | 1.0 | 4.0 | 4.0 | 1.00 | 1641 | -14.8 |
| 17 | Agdamag, Samuel | 1612 | USA | −3N | F | F | +21N | 1.0 | 3.0 | 3.0 | 0.00 | 1626 | +0.6 |
| 18 | Schaezlein, Charlie | 1760 | USA | F | −16N | +21B | −11N | 1.0 | 2.5 | 2.5 | 0.00 | 1567 | -15.0 |
| 19 | Ochoa, Jason | 1804 | USA | +16B | −15N | F | F | 1.0 | 2.0 | 2.0 | 1.00 | 1795 | -0.4 |
| 20 | Abraham, Michael | 1743 | USA | −1N | −12B | F | −3B | 0.0 | 8.0 | 8.0 | 0.00 | 841 | -37.2 |
| 21 | Casares, Nick | 1519 | USA | −9N | −3B | −18N | −17B | 0.0 | 6.0 | 7.0 | 0.00 | 875 | -23.8 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Yan, RaynaUSA+54.03.0 pts · #3
- 2Dutter, FredericUSA+26.63.5 pts · #1
- 3Zhanaidarov, OrynbayKAZ+23.41.5 pts · #12
Top rating losers
- 1Abraham, MichaelUSA-37.20.0 pts · #20
- 2Casares, NickUSA-23.80.0 pts · #21
- 3Mays-Smith, Isaac SUSA-19.61.5 pts · #10
Biggest upsets
- R2+287 Elo gap
- R4+152 Elo gap