33rd Annual Southern Open - Major
39 players participated in this 5-round tournament, held from 25 Jul 2025 to 27 Jul 2025 in Kissimmee, FL, United States. 8 titled players from 5 federations. Top 10 Elo average was 2233, and top seed was Joshua Posthuma (🇺🇸 USA, IM, 2392).
Vikram Rajmohan (🇬🇧 ENG, 2056) won with 4.0/5, ahead of Brejesh Chakrabarti (4.0) and Vishnusankar Jonnalagadda (3.5). Rajmohan shared the lead from round 1, winning on tie-break.
The biggest upset came in round 3: Vishnusankar Jonnalagadda (2047) beat Joshua Posthuma (IM, 2392), a +345-point gap.
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How it unfolded
Top 6 · 5 roundsTight race until R4; 2 players tied at 4.0/5, decided on Buchholz.
Vikram Rajmohan held the sole lead from R4 through R5 without losing it.
2 players finish on 4.0/5. Rajmohan takes the title on Buchholz Cut1 (10.5).
Vikram Rajmohan 3 wins (R1–R3)FM Brejesh Chakrabarti 4 wins (R2–R5)Vishnusankar Jonnalagadda 3 wins (R1–R3)
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Rajmohan, Vikram | 2056 | ENG | +37N | +6B | +7N | =15B | =10N | 4.0 | 10.5 | 10.5 | 8.25 | 2349 | +54.0 |
| 2 | Chakrabarti, BrejeshFM | 2259 | USA | −9N | +8B | +18B | +29N | +14B | 4.0 | 9.0 | 10.0 | 7.50 | 2178 | -5.4 |
| 3 | Jonnalagadda, Vishnusankar | 2047 | USA | +8B | +9N | +22B | −10B | =15N | 3.5 | 9.5 | 11.0 | 7.50 | 2322 | +67.2 |
| 4 | Bynum, Jacorey | 2055 | USA | −6N | +35B | +21N | +32B | =22N | 3.5 | 7.5 | 8.0 | 4.25 | 2146 | +23.6 |
| 5 | Fonseca, Miguel | 2017 | USA | =19N | +24B | +25N | −22B | +17B | 3.5 | 7.0 | 8.5 | 6.00 | 2150 | +16.2 |
| 6 | Starkman, Eric | 1869 | USA | +4B | −1N | +30B | −11N | +16N | 3.0 | 12.0 | 13.0 | 6.50 | 2173 | +37.8 |
| 7 | Moore, Nickolas | 2158 | USA | +34B | +23N | −1B | +28N | −11B | 3.0 | 9.0 | 9.5 | 3.00 | 2043 | -11.8 |
| 8 | Murphy, Liam | 1863 | USA | −3N | −2N | +34B | =12B | +27N | 2.5 | 11.5 | 12.0 | 3.25 | 1978 | +25.6 |
| 9 | Li, SophieWFM | 1919 | USA | +2B | −3B | =36N | +20N | F | 2.5 | 10.0 | 10.0 | 6.25 | 2180 | +50.4 |
| 10 | Leon Oquendo, JorgeFM | 2372 | CUB | F | F | +14B | +3N | =1B | 2.5 | 9.5 | 9.5 | 7.50 | 2353 | -0.3 |
| 11 | Venkat, Raghav | 2234 | USA | F | F | =16N | +6B | +7N | 2.5 | 8.0 | 8.0 | 7.00 | 2273 | +3.6 |
| 12 | Marian, Aaron | 1844 | USA | +20B | −14N | −28B | =8N | +31B | 2.5 | 7.5 | 8.5 | 4.25 | 1863 | +3.2 |
| 13 | Roy, Ayush | 1834 | USA | F | F | +33B | +26N | =29B | 2.5 | 3.5 | 3.5 | 3.00 | 1909 | +4.0 |
| 14 | Slade, Theodore | 2138 | ENG | F | +12B | −10N | +16B | −2N | 2.0 | 11.0 | 11.0 | 4.50 | 2112 | -2.4 |
| 15 | Leyva Rivera, YunierIM | 2321 | CUB | F | F | +17B | =1N | =3B | 2.0 | 9.5 | 9.5 | 5.75 | 2142 | -5.5 |
| 16 | Pothuri, Abhiram | 1973 | USA | +39B | =18N | =11B | −14N | −6B | 2.0 | 9.5 | 9.5 | 2.25 | 1863 | -28.8 |
| 17 | Yang, MaxwellCM | 1949 | USA | F | +19B | −15N | +24B | −5N | 2.0 | 9.0 | 9.0 | 3.50 | 2016 | +10.0 |
| 18 | Joseph, Alexander | 1683 | USA | F | =16B | −2N | =30N | +23B | 2.0 | 8.5 | 8.5 | 3.00 | 2015 | +55.9 |
| 19 | Ravishankar, Dhruvesh | 1872 | USA | =5B | −17N | =26B | =31N | =30B | 2.0 | 8.0 | 9.0 | 3.50 | 1897 | +2.0 |
| 20 | Elvers, Tristan | 1824 | USA | −12N | +34N | =23B | −9B | =24N | 2.0 | 8.0 | 8.5 | 2.00 | 1812 | -3.2 |
| 21 | Maddikonda, Ayush | 1920 | USA | F | F | −4B | +35N | +28B | 2.0 | 5.0 | 5.0 | 1.50 | 1970 | +8.4 |
| 22 | Posthuma, JoshuaIM | 2392 | USA | F | F | −3N | +5N | =4B | 1.5 | 10.5 | 10.5 | 5.25 | 2040 | -11.8 |
| 23 | Ay, Altug | 1918 | TUR | +35N | −7B | =20N | −25B | −18N | 1.5 | 8.5 | 9.0 | 1.50 | 1727 | -25.8 |
| 24 | Mysore, Abhinav | 1853 | USA | F | −5N | +38B | −17N | =20B | 1.5 | 7.5 | 7.5 | 1.00 | 1793 | -7.2 |
| 25 | Vadderaju, Sudeep | 1941 | USA | F | F | −5B | +23N | =32B | 1.5 | 6.0 | 6.0 | 2.00 | 1988 | +7.6 |
| 26 | Sevilla, Kevin M | 0 | USA | F | F | =19N | −13B | +34N | 1.5 | 5.0 | 5.0 | 1.50 | 1865 | 0.0 |
| 27 | Jiang, Rui | 1851 | USA | F | F | =31N | +38B | −8B | 1.5 | 3.5 | 3.5 | 0.50 | 1791 | -10.0 |
| 28 | Meadors, Landon | 1709 | USA | F | F | +12N | −7B | −21N | 1.0 | 7.5 | 7.5 | 2.50 | 1833 | +14.8 |
| 29 | Barnes, Maxwell | 1909 | USA | F | F | =32N | −2B | =13N | 1.0 | 7.5 | 7.5 | 1.75 | 1916 | -1.0 |
| 30 | Perez Rodriguez, JenniferWGM | 2188 | PAR | F | F | −6N | =18B | =19N | 1.0 | 7.0 | 7.0 | 2.00 | 1718 | -33.2 |
| 31 | Kumar, Agrim | 1782 | USA | F | F | =27B | =19B | −12N | 1.0 | 6.0 | 6.0 | 1.75 | 1731 | -7.6 |
| 32 | Stone, Vincent W | 2030 | USA | F | F | =29B | −4N | =25N | 1.0 | 6.0 | 6.0 | 1.25 | 1843 | -15.0 |
| 33 | Ramaswamy, Rohit | 0 | USA | F | F | −13N | =34N | =35B | 1.0 | 3.5 | 3.5 | 0.50 | 1706 | 0.0 |
| 34 | Mishra, Om | 1888 | USA | −7N | −20B | −8N | =33B | −26B | 0.5 | 9.0 | 10.0 | 0.50 | 1148 | -51.6 |
| 35 | Tanksley, Quan | 1771 | USA | −23B | −4N | F | −21B | =33N | 0.5 | 8.0 | 8.0 | 0.50 | 1164 | -15.2 |
| 36 | Acor, CoreyFM | 2209 | USA | F | F | =9B | F | F | 0.5 | 2.5 | 2.5 | 1.25 | 1919 | -6.8 |
| 37 | Bee, Leonel | 1826 | USA | −1B | F | F | F | F | 0.0 | 4.0 | 4.0 | 0.00 | 1256 | -8.4 |
| 38 | Muneepeerakul, Analaya | 1728 | USA | F | F | −24N | −27N | F | 0.0 | 3.0 | 3.0 | 0.00 | 1052 | -26.4 |
| 39 | Bee, Karstein | 1750 | USA | −16N | F | F | F | F | 0.0 | 2.0 | 2.0 | 0.00 | 1173 | -8.8 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Jonnalagadda, VishnusankarUSA+67.23.5 pts · #3
- 2Joseph, AlexanderUSA+55.92.0 pts · #17
- 3Rajmohan, VikramENG+54.04.0 pts · #1
- 1Mishra, OmUSA-51.60.5 pts · #35
- 2Perez Rodriguez, JenniferWGMPAR-33.21.0 pts · #32
- 3Pothuri, AbhiramUSA-28.82.0 pts · #15
- R3+345 Elo gap
- R1+340 Elo gap
- R3+319 Elo gap