8th Annual Irwin National Tournament of Senior State Champions
SwissStandard
49 players participated in this 6-round tournament, held from 28 Jul 2025 to 31 Jul 2025 in Middleton, WI, United States. 15 titled players from 7 federations. Top 10 Elo average was 2267, and top seed was Stuart Rachels (🇺🇸 USA, IM, 2451).
Alexander Fishbein (🇺🇸 USA, GM, 2368) won with 5.0/6, ahead of Stuart Rachels (5.0) and Robby Adamson (4.5). Fishbein shared the lead from round 1, winning on tie-break.
The biggest upset came in round 3: Robert J Fischer (1817) beat Julio Antonio Morella Cabrera (FM, 2147), a +330-point gap.
Location
🇺🇸Middleton, WI, United States
Dates
28 Jul 2025 → 31 Jul 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 6 rounds
Titled players · 15
GM×2
IM×5
FM×7
CM×1
Federations · 7 represented
🇺🇸United States of America×42
🇺🇿Uzbekistan×1
🇳🇬Nigeria×1
🇨🇺Cuba×1
🇺🇦Ukraine×1
🇵🇦Panama×1
🇰🇿Kazakhstan×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsTight race until R4; 2 players tied at 5.0/6, decided on Buchholz.
Co-leaders
18
6
2
1
1
2
R4–R6 · LEAD HELD
GM Alexander Fishbein held the sole lead from R4 through R6 without losing it.
R6 · TIEBREAK CLUSTER
2 players finish on 5.0/6. Fishbein takes the title on Buchholz Cut1 (21.0).
R5 · HEAD-TO-HEAD · WINNER VS 2ND
GM Alexander Fishbein drew with IM Stuart Rachels (White).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1GMAlexander Fishbein | * | ½ | — | ½ |
| 2IMStuart Rachels | ½ | * | ½ | — |
| 3IMTimothy Taylor | — | ½ | * | 0 |
| 4FMRobby Adamson | ½ | — | 1 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Fishbein, AlexanderGM | 2368 | USA | +27B | +21N | +8B | +5N | =2B | =3N | 5.0 | 21.0 | 24.0 | 19.25 | 2465 | +7.8 |
| 2 | Rachels, StuartIM | 2451 | USA | +34B | +31N | =4B | +15N | =1N | +7B | 5.0 | 20.0 | 22.5 | 17.75 | 2426 | -0.2 |
| 3 | Adamson, RobbyFM | 2226 | USA | +47N | =7B | +20N | +4N | =6B | =1B | 4.5 | 21.0 | 22.0 | 15.25 | 2365 | +21.8 |
| 4 | Taylor, TimothyIM | 2147 | USA | +35B | +23N | =2N | −3B | +20N | +11B | 4.5 | 19.0 | 21.5 | 14.50 | 2289 | +11.8 |
| 5 | Matros, AlexanderIM | 2312 | KAZ | +19B | +25N | +24B | −1B | =11N | +17N | 4.5 | 18.0 | 21.0 | 14.25 | 2236 | -2.6 |
| 6 | Khachiyan, MeliksetGM | 2396 | USA | =22N | +33B | =11N | +26B | =3N | +13B | 4.5 | 17.5 | 20.0 | 14.50 | 2284 | -5.6 |
| 7 | Markzon, GregoryFM | 2056 | USA | +46B | =3N | =12B | +16N | +8B | −2N | 4.0 | 20.5 | 22.0 | 13.00 | 2324 | +33.8 |
| 8 | Kosokin, Valeriy | 2143 | UZB | +30B | +17N | −1N | +14B | −7N | +22B | 4.0 | 19.0 | 22.0 | 13.00 | 2129 | -0.2 |
| 9 | Baker, Jerry | 0 | USA | =16B | −12N | +36B | =21N | +29B | +23N | 4.0 | 16.0 | 18.5 | 11.75 | 2068 | 0.0 |
| 10 | Hoshor, Mark T | 2025 | USA | =44N | +28B | =13N | +19B | −12N | +27N | 4.0 | 16.0 | 17.5 | 11.50 | 2101 | +24.0 |
| 11 | Koganov, Mikhail | 2153 | USA | =36B | +29N | =6B | +30N | =5B | −4N | 3.5 | 19.5 | 22.0 | 11.75 | 2126 | -1.0 |
| 12 | Enkhbat, TegshsurenIM | 2275 | USA | =33N | +9B | =7N | =23B | +10B | −18N | 3.5 | 18.5 | 21.0 | 12.75 | 2017 | -15.5 |
| 13 | Rubsamen, Cornelius | 2176 | USA | +45B | =14N | =10B | =24N | +25B | −6N | 3.5 | 18.0 | 19.5 | 9.75 | 2070 | -13.8 |
| 14 | Sosa, Nestor RodolfoCM | 2017 | PAN | +38N | =13B | =16B | −8N | +30B | =15N | 3.5 | 17.5 | 19.5 | 10.25 | 2085 | +9.6 |
| 15 | Eckert, DougFM | 2151 | USA | +43N | =20B | +22N | −2B | =23N | =14B | 3.5 | 17.5 | 19.0 | 9.25 | 2084 | -8.2 |
| 16 | Johnson, LeonardFM | 2164 | USA | =9N | +44B | =14N | −7B | =19N | +33B | 3.5 | 17.0 | 18.5 | 9.25 | 2014 | -17.2 |
| 17 | Altucher, James | 1883 | USA | +49N | −8B | +38N | =18B | +26N | −5B | 3.5 | 17.0 | 17.0 | 6.75 | 2045 | +13.2 |
| 18 | ADU, OladapoIM | 2128 | NGR | F | F | +34B | =17N | +24B | +12B | 3.5 | 12.5 | 12.5 | 10.75 | 2331 | +17.2 |
| 19 | Fischer, Robert J | 1817 | USA | −5N | +32B | +31B | −10N | =16B | =21N | 3.0 | 18.0 | 21.0 | 9.25 | 2087 | +37.8 |
| 20 | Joelson, Dan | 2090 | USA | +37B | =15N | −3B | +43N | −4B | =32N | 3.0 | 18.0 | 19.5 | 7.25 | 1994 | -25.6 |
| 21 | Dehmelt, KarlFM | 2054 | USA | +39B | −1B | =35N | =9B | =28N | =19B | 3.0 | 17.5 | 19.5 | 8.25 | 1894 | -19.2 |
| 22 | Caveney, Adam | 1909 | USA | =6B | +36N | −15B | =29N | +40B | −8N | 3.0 | 17.5 | 19.5 | 8.25 | 2002 | +8.8 |
| 23 | Nichols, Anthony | 1911 | USA | +40N | −4B | +41N | =12N | =15B | −9B | 3.0 | 17.5 | 19.5 | 7.50 | 2072 | +14.8 |
| 24 | Gavrish, Leonid | 1951 | UKR | +48B | +26N | −5N | =13B | −18N | =31B | 3.0 | 17.5 | 18.0 | 6.75 | 2075 | +13.8 |
| 25 | Truelson, Nels | 1959 | USA | +32N | −5B | =43N | +35B | −13N | =28B | 3.0 | 16.5 | 18.0 | 7.75 | 1950 | -2.6 |
| 26 | Haessler, Carl | 1972 | USA | +41N | −24B | +27N | −6N | −17B | +40N | 3.0 | 16.0 | 18.0 | 7.00 | 1890 | -13.2 |
| 27 | Elliott, Scott A. | 1890 | USA | −1N | +39B | −26B | +46N | +38N | −10B | 3.0 | 16.0 | 17.5 | 5.50 | 1821 | -9.2 |
| 28 | Wikle, Earle P | 1840 | USA | =29B | −10N | =45B | +34N | =21B | =25N | 3.0 | 15.5 | 17.0 | 7.75 | 1953 | +29.2 |
| 29 | Van Meter, LesterFM | 1857 | USA | =28N | −11B | +44N | =22B | −9N | +41B | 3.0 | 15.5 | 17.0 | 6.50 | 1967 | +14.2 |
| 30 | Law, Bruce | 1792 | USA | −8N | +49B | +33N | −11B | −14N | +38B | 3.0 | 15.5 | 15.5 | 4.50 | 1876 | +12.0 |
| 31 | Morella Cabrera, Julio AntonioFM | 2147 | CUB | +42B | −2B | −19N | =39N | +43B | =24N | 3.0 | 15.0 | 16.5 | 6.00 | 1936 | -28.6 |
| 32 | Kochman, David | 1912 | USA | −25B | −19N | =48B | +42N | +45B | =20B | 3.0 | 12.5 | 13.0 | 5.25 | 1841 | -16.8 |
| 33 | Inumerable, Florentino | 1964 | USA | =12B | −6N | −30B | +48N | +39B | −16N | 2.5 | 16.5 | 17.0 | 4.25 | 1923 | -8.8 |
| 34 | Carey, Michael | 1872 | USA | −2N | +42B | −18N | −28B | =35N | +43B | 2.5 | 16.0 | 17.5 | 4.75 | 1868 | -4.2 |
| 35 | Slive, Alex | 1679 | USA | −4N | +40B | =21B | −25N | =34B | =37N | 2.5 | 15.5 | 17.5 | 6.00 | 1792 | +20.4 |
| 36 | Henderson, Jordan | 1909 | USA | =11N | −22B | −9N | −38B | +48N | +45N | 2.5 | 14.0 | 14.5 | 3.75 | 1838 | -8.0 |
| 37 | Chang, SW | 1742 | USA | −20N | −43B | −39N | +49B | +44N | =35B | 2.5 | 10.5 | 10.5 | 2.75 | 1686 | -18.0 |
| 38 | Riddle, Randal | 0 | USA | −14B | +45N | −17B | +36N | −27B | −30N | 2.0 | 15.5 | 17.0 | 4.00 | 1658 | 0.0 |
| 39 | Slominski, Jerry | 1767 | USA | −21N | −27N | +37B | =31B | −33N | =46N | 2.0 | 14.0 | 15.5 | 4.75 | 1810 | +5.6 |
| 40 | Sulyandziga, Pavel | 0 | USA | −23B | −35N | +42N | +41B | −22N | −26B | 2.0 | 13.5 | 15.5 | 4.00 | 1714 | 0.0 |
| 41 | Goodman, Michael K | 1713 | USA | −26B | +48N | −23B | −40N | +46B | −29N | 2.0 | 12.5 | 13.0 | 2.00 | 1113 | -14.6 |
| 42 | Graham, Shaun | 1847 | USA | −31N | −34N | −40B | −32B | +49N | +48B | 2.0 | 11.0 | 11.0 | 0.50 | 1177 | -20.6 |
| 43 | Lederer, Howard H | 1785 | USA | −15B | +37N | =25B | −20B | −31N | −34N | 1.5 | 15.0 | 17.5 | 4.00 | 1801 | -2.0 |
| 44 | Sanders, Lewis | 1858 | USA | =10B | −16N | −29B | −45N | −37B | +49N | 1.5 | 14.5 | 14.5 | 2.00 | 1625 | -21.6 |
| 45 | Mayer, Zygmond | 0 | USA | −13N | −38B | =28N | +44B | −32N | −36B | 1.5 | 14.0 | 15.5 | 3.00 | 1790 | 0.0 |
| 46 | Strickland, Wilton | 0 | USA | −7N | −47B | +49N | −27B | −41N | =39B | 1.5 | 12.0 | 12.0 | 1.00 | 1514 | 0.0 |
| 47 | Becker, Allen | 1972 | USA | −3B | +46N | F | F | F | F | 1.0 | 6.0 | 6.0 | 1.50 | 1426 | -3.8 |
| 48 | Day, David | 0 | USA | −24N | −41B | =32N | −33B | −36B | −42N | 0.5 | 13.0 | 15.0 | 1.50 | 1482 | 0.0 |
| 49 | FIDE 39988422 | 0 | — | −17B | −30N | −46B | −37N | −42B | −44B | 0.0 | 12.5 | 14.0 | 0.00 | 1024 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Fischer, Robert JUSA+37.83.0 pts · #16
- 2Markzon, GregoryFMUSA+33.84.0 pts · #14
- 3Wikle, Earle PUSA+29.23.0 pts · #20
Top rating losers
- 1Morella Cabrera, Julio AntonioFMCUB-28.63.0 pts · #15
- 2Joelson, DanUSA-25.63.0 pts · #19
- 3Sanders, LewisUSA-21.61.5 pts · #42
Biggest upsets
- R3+330 Elo gap
- R3+172 Elo gap
- R6+147 Elo gap