94th Massachusetts Open
SwissStandard
53 players participated in this 6-round tournament, held from 23 May 2026 to 25 May 2026 in Marlborough, MA, United States. 9 titled players from 4 federations. Top 10 Elo average was 2210, and top seed was Alexander Ivanov (🇺🇸 USA, GM, 2377).
Jamison Edrich Kao (🇺🇸 USA, CM, 2205) won with 5.5/6, ahead of Dattasai Kilari (4.5) and William Wu (4.5). Kao shared the lead from round 5 and broke clear in the final round.
The biggest upset came in round 1: Jerry Chen (1841) beat Denis Shmeliov (IM, 2347), a +506-point gap.
Location
🇺🇸Marlborough, MA, United States
Dates
23 May 2026 → 25 May 2026
Time control
Standard: 40 Moves in 120 Min. Del. 10 Sec. / / 30 Min. Del. 10 Sec.
System
Swiss · 6 rounds
Titled players · 9
GM×1
IM×1
FM×4
CM×1
WFM×1
WCM×1
Federations · 4 represented
🇺🇸United States of America×49
🇺🇦Ukraine×1
🇦🇿Azerbaijan×1
🇮🇳India×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsCM Jamison Edrich Kao led from R6; +1.0-point edge over the runner-up.
Co-leaders
15
4
2
1
2
1
R6 · LEADER CHANGE25 May
CM Jamison Edrich Kao takes the sole lead (5.5/6).
WIN STREAKS · 2 top finishers
CM Jamison Edrich Kao 5 wins (R2–R6)FM Danila Poliannikov 3 wins (R2–R4)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1CMJamison Edrich Kao | * | — | 1 | 1 |
| 2FMDanila Poliannikov | — | * | — | ½ |
| 3Jerry Chen | 0 | — | * | — |
| 4Dattasai Kilari | 0 | ½ | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Kao, Jamison EdrichCM | 2205 | USA | =22N | +25B | +41N | +5B | +16N | +2B | 5.5 | 17.0 | 18.5 | 17.25 | 2350 | +30.8 |
| 2 | Kilari, Dattasai | 1971 | USA | +52N | +43B | +14N | +3B | =4N | −1N | 4.5 | 19.0 | 19.0 | 11.25 | 2167 | +60.8 |
| 3 | Wu, William | 1990 | USA | +21B | +40N | +10B | −2N | +14N | =4B | 4.5 | 18.0 | 19.5 | 12.75 | 2205 | +64.0 |
| 4 | Poliannikov, DanilaFM | 2332 | USA | =41N | +47B | +12N | +11B | =2B | =3N | 4.5 | 17.5 | 18.5 | 13.25 | 2177 | -16.2 |
| 5 | Chen, Jerry | 1841 | USA | +7B | =15N | +42B | −1N | +26B | +46N | 4.5 | 17.0 | 18.5 | 11.50 | 2289 | +132.0 |
| 6 | Ivanov, AlexanderGM | 2377 | USA | +51B | −10N | +13B | =30N | +12B | +9B | 4.5 | 17.0 | 17.0 | 12.25 | 2164 | -9.7 |
| 7 | Shmeliov, DenisIM | 2347 | UKR | −5N | +24B | +47N | =28B | +36N | +11B | 4.5 | 15.0 | 16.0 | 10.25 | 2170 | -8.8 |
| 8 | Sowa, Ryan | 2070 | USA | =38B | +19N | =27B | =26N | +10B | +30N | 4.5 | 13.5 | 15.5 | 12.00 | 2191 | +18.6 |
| 9 | Zhou, Arthur | 1837 | USA | −42B | +49N | +40B | +37N | +15B | −6N | 4.0 | 12.5 | 13.0 | 7.00 | 2089 | +75.6 |
| 10 | Barnakov, Yuri | 2090 | USA | +39N | +6B | −3N | =35B | −8N | +20B | 3.5 | 18.5 | 20.5 | 10.25 | 2110 | +4.2 |
| 11 | Sham R | 2116 | IND | +20B | =34N | +31B | −4N | +17B | −7N | 3.5 | 17.0 | 19.5 | 9.25 | 2126 | +2.8 |
| 12 | Katsman, David | 1952 | USA | +49B | =42N | −4B | +29N | −6N | +36B | 3.5 | 15.0 | 15.5 | 5.75 | 2084 | +18.6 |
| 13 | Polizzi, Nicholas Cody | 0 | USA | +23N | −14B | −6N | =45B | +44N | +32B | 3.5 | 14.0 | 15.5 | 7.25 | 2038 | 0.0 |
| 14 | Arun, Siddharth | 1978 | USA | +33B | +13N | −2B | +27N | −3B | F | 3.0 | 17.5 | 17.5 | 8.50 | 1919 | -5.8 |
| 15 | Times, Lawyer | 1946 | USA | +24N | =5B | +36N | =16B | −9N | F | 3.0 | 16.0 | 16.0 | 8.25 | 2020 | +9.2 |
| 16 | Su, Jasmine ZhixinFM | 2253 | USA | =19B | +38N | +34B | =15N | −1B | F | 3.0 | 15.5 | 15.5 | 7.25 | 2071 | -19.8 |
| 17 | Carlson, Jericho D | 1833 | USA | =37N | =28B | =23N | +41B | −11N | =27B | 3.0 | 13.0 | 14.5 | 6.25 | 1982 | +45.6 |
| 18 | Resika, NathanFM | 1957 | USA | =25N | −36B | =20N | +47B | =38N | =33B | 3.0 | 11.5 | 12.5 | 5.75 | 1886 | -11.2 |
| 19 | Huang, Charles | 1945 | USA | =16N | −8B | +25N | =23B | =32N | −35B | 2.5 | 15.0 | 17.5 | 6.50 | 2042 | +26.4 |
| 20 | Carey, Michael | 1915 | USA | −11N | =44B | =18B | +21N | =37B | −10N | 2.5 | 14.5 | 16.0 | 5.75 | 1883 | -6.4 |
| 21 | Shevelenko, Leon | 1772 | USA | −3N | +32B | −28N | −20B | +45N | =24B | 2.5 | 14.5 | 16.0 | 5.25 | 1852 | +21.2 |
| 22 | Azimzada, Mahammad | 1686 | AZE | =1B | −35N | −29B | +53N | +40B | −26N | 2.5 | 14.5 | 14.5 | 4.25 | 1826 | +24.0 |
| 23 | Kozower, Ethan | 2103 | USA | −13B | +33N | =17B | =19N | =27B | F | 2.5 | 14.0 | 14.0 | 6.50 | 1968 | -12.0 |
| 24 | Riaz, Rayhan | 1849 | USA | −15B | −7N | +51B | =40N | =31B | =21N | 2.5 | 14.0 | 14.0 | 3.25 | 1900 | +10.4 |
| 25 | Uwakwe, Michael | 1890 | USA | =18B | −1N | −19B | +51N | −29B | +49N | 2.5 | 14.0 | 14.0 | 2.00 | 1849 | -8.4 |
| 26 | Rajendra, Avinash | 2038 | USA | F | F | +43N | =8B | −5N | +22B | 2.5 | 13.0 | 13.0 | 6.25 | 1907 | -10.2 |
| 27 | Zhang, Royce | 1983 | USA | F | +53B | =8N | −14B | =23N | =17N | 2.5 | 13.0 | 13.0 | 5.00 | 1909 | -17.2 |
| 28 | wang, Bohan | 1861 | USA | =29B | =17N | +21B | =7N | F | F | 2.5 | 12.5 | 12.5 | 7.50 | 1996 | +23.6 |
| 29 | Liu, Eric | 1739 | USA | =28N | −41B | +22N | −12B | +25N | F | 2.5 | 12.5 | 12.5 | 6.25 | 1864 | +32.8 |
| 30 | Stern, Kevin B | 2055 | USA | −47N | +52B | +39N | =6B | F | −8B | 2.5 | 12.0 | 12.0 | 4.25 | 1972 | -20.0 |
| 31 | Young, Ryan | 1963 | USA | +50N | =46B | −11N | −36B | =24N | =43B | 2.5 | 11.0 | 11.5 | 3.25 | 1824 | -21.0 |
| 32 | Lee, Rohan | 2096 | USA | −40B | −21N | +49B | +50N | =19B | −13N | 2.5 | 10.5 | 11.0 | 2.25 | 1808 | -65.2 |
| 33 | Wu, Felix | 1732 | USA | −14N | −23B | +52N | +43B | F | =18N | 2.5 | 10.0 | 10.0 | 3.00 | 1875 | +32.8 |
| 34 | Wang, LaceyWFM | 2021 | USA | +44N | =11B | −16N | +48B | F | F | 2.5 | 9.0 | 9.0 | 4.25 | 2094 | +15.6 |
| 35 | Castaneda, NelsonFM | 2183 | USA | F | +22B | F | =10N | F | +19N | 2.5 | 8.5 | 8.5 | 6.75 | 2212 | +3.0 |
| 36 | Davis, Peter | 1960 | USA | F | +18N | −15B | +31N | −7B | −12N | 2.0 | 16.5 | 16.5 | 5.50 | 1961 | -4.8 |
| 37 | Terrie, Henry | 1896 | USA | =17B | F | +45N | −9B | =20N | F | 2.0 | 11.0 | 11.0 | 4.25 | 1832 | -6.8 |
| 38 | Sage, J Timothy | 1877 | USA | =8N | −16B | +53N | F | =18B | F | 2.0 | 10.5 | 10.5 | 3.75 | 1968 | +5.4 |
| 39 | Dey, Ranjan | 1784 | USA | −10B | +51N | −30B | F | +48N | F | 2.0 | 7.0 | 7.0 | 1.00 | 1963 | +17.6 |
| 40 | Smirnov, William | 1926 | USA | +32N | −3B | −9N | =24B | −22N | −44B | 1.5 | 16.0 | 17.5 | 3.75 | 1685 | -37.6 |
| 41 | Mallela, Abhishek | 1933 | USA | =4B | +29N | −1B | −17N | F | F | 1.5 | 15.5 | 15.5 | 4.75 | 1940 | -2.8 |
| 42 | Carlson, Joaquin | 2078 | USA | +9N | =12B | −5N | F | F | F | 1.5 | 12.0 | 12.0 | 5.75 | 1877 | -15.4 |
| 43 | Narayanan, Krishna | 1652 | USA | F | −2N | −26B | −33N | +53B | =31N | 1.5 | 12.0 | 12.0 | 1.25 | 1604 | -10.0 |
| 44 | Bierig, Trevor W | 1807 | USA | −34B | =20N | F | F | −13B | +40N | 1.5 | 10.0 | 10.0 | 2.75 | 1954 | +23.2 |
| 45 | Siu, Liam | 1744 | USA | F | F | −37B | =13N | −21B | +50N | 1.5 | 8.5 | 8.5 | 2.25 | 1645 | -16.0 |
| 46 | Abdi, Farzad | 2068 | USA | F | =31N | +48B | F | F | −5B | 1.5 | 8.0 | 8.0 | 2.25 | 1875 | -14.8 |
| 47 | Spencer, Aaron | 1940 | USA | +30B | −4N | −7B | −18N | F | F | 1.0 | 14.5 | 14.5 | 2.50 | 1978 | +0.4 |
| 48 | Li, Wan QinWCM | 1820 | USA | F | +50B | −46N | −34N | −39B | F | 1.0 | 6.5 | 6.5 | 0.50 | 1686 | -28.4 |
| 49 | Vellanki, Devansh | 1700 | USA | −12N | −9B | −32N | F | =50B | −25B | 0.5 | 13.0 | 13.0 | 0.25 | 1517 | -36.8 |
| 50 | Strobehn, Alexander | 1641 | USA | −31B | −48N | F | −32B | =49N | −45B | 0.5 | 8.0 | 8.0 | 0.25 | 1488 | -30.4 |
| 51 | Farfel, Vlad | 1888 | USA | −6N | −39B | −24N | −25B | F | F | 0.0 | 11.5 | 11.5 | 0.00 | 1153 | -70.8 |
| 52 | Wang, Frank | 1687 | USA | −2B | −30N | −33B | F | F | F | 0.0 | 9.5 | 9.5 | 0.00 | 1119 | -28.0 |
| 53 | FIDE 566014697 | 0 | — | F | −27N | −38B | −22B | −43N | F | 0.0 | 8.5 | 8.5 | 0.00 | 1000 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Chen, JerryUSA+132.04.5 pts · #3
- 2Zhou, ArthurUSA+75.64.0 pts · #8
- 3Wu, WilliamUSA+64.04.5 pts · #6
Top rating losers
- 1Farfel, VladUSA-70.80.0 pts · #53
- 2Lee, RohanUSA-65.22.5 pts · #19
- 3Smirnov, WilliamUSA-37.61.5 pts · #37
Biggest upsets
- R1+506 Elo gap
- R2+324 Elo gap
- R2+287 Elo gap