CChessStats

12th Annual Potomac Open - Championship

Open SwissStandard

34 players participated in this 5-round tournament, held from 25 Jul 2025 to 27 Jul 2025 in Rockville, MD, United States. 7 titled players from 3 federations. Top 10 Elo average was 2195, and top seed was Tal Baron (🇮🇱 ISR, GM, 2436).

Daniel Girsh (🇺🇸 USA, FM, 2237) won with 4.5/5, ahead of Matthew Guo Diao (4.0) and Raphael D Schwartz (3.5). Girsh broke clear in the final round.

The biggest upset came in round 4: Brandon Joseph Chen (1833) beat Kevin Wang (2171), a +338-point gap.

Location
🇺🇸Rockville, MD, United States
Dates
25 Jul 2025 → 27 Jul 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 5 rounds
Top seed
🇮🇱GMTal Baron2436
Avg top 10
2,195
Participants
34
Titled players · 7
GM×1
FM×4
CM×1
WFM×1
Federations · 3 represented
🇺🇸United States of America×32
🇮🇳India×1
🇮🇱Israel×1
Top 3

How it unfolded

Top 6 · 5 rounds

FM Daniel Girsh led from R5; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.

Co-leaders
8
3
4
2
1
1.52.545R1R2R3R4R5
R5–R5 · LEAD HELD

FM Daniel Girsh held the sole lead from R5 through R5 without losing it.

R3 · HEAD-TO-HEAD · WINNER VS 2ND

FM Daniel Girsh drew with FM Matthew Guo Diao (White).

R1–R5 · UNBEATEN

FM Daniel Girsh went unbeaten across 5 games (R1–R5).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1FMDaniel Girsh*
½
2FMMatthew Guo Diao
½
*
3Raphael D Schwartz*
1
4Hanford Chong
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Girsh, DanielFM2237USA+11B+6N=2B+4N+15B4.512.514.512.502427+19.4
2Diao, Matthew GuoFM2244USA+20N+10B=1N+9B=12N4.012.013.510.002343+21.0
3Schwartz, Raphael D1926USAF+27N=15B+6N+7B3.59.09.08.002349+76.4
4Zlodorev, Alexander1934USA+21B=5N+32N1B=24B3.010.511.04.252177+63.2
5Swaminathan, Pranav2113USA+26N=4B9N+18B=14B3.010.011.05.751933-40.4
6Moorhouse, Will2009USA+33N1B+26N3B+30N3.010.010.52.502025+4.8
7Chong, Hanford1969USA=15B=22N+34B+8N3N3.010.010.04.752031+15.6
8Yue, Andy1923USA23N+33B+10N7B+32N3.07.58.03.502059+37.2
9Katta, Sriansh1929USA=29N+13B+5B2NF2.510.510.56.002215+57.2
10Desai, Aneesh1992USA+28B2N8B=33N+20B2.59.510.02.751959-5.2
11Balakrishnan, Naveen1872USA1N26B+27B+34N=17B2.58.58.52.001948+16.8
12Baron, TalGM2436ISRFF+19B+24N=2B2.57.57.55.502378-0.9
13Sherman, David1952USA=22B9N+28B21N+31B2.56.57.52.751927-3.6
14Li, Mason J1862USAF+29B=16N=32B=5N2.56.56.53.752233+72.4
15Ansh M Shah2244IND=7NF=3N+30B1N2.012.012.04.252017-21.4
16Sriniaiyer, SudarshanFM2215USAFF=14B+22N=21B2.05.55.53.502075-8.0
17Su, Kevin1992USAFF=20N+26B=11N2.05.05.03.002003+1.6
18Aayansh Pramanik1739USAFF+25N5N+34B2.04.54.51.502092+52.4
19Mariappan, Anish1890USA+34N+23B12NFF2.04.04.01.502202+22.4
20Srinivasan, Arjun1922USA2B=28N=17B=23B10N1.510.011.02.251893-10.0
21Yue, TariqCM2131USA4NF24N+13B=16N1.59.09.03.501935-32.6
22Ghosh, Yohan1858USA=13N=7B=29N16BF1.58.58.53.251990+21.2
23Samuelson, AndrewFM2100USA+8B19N30B=20NF1.57.57.53.751831-29.0
24Ben Jemaa, Munir1988USAFF+21B12B=4N1.57.07.03.002151+10.6
25Sridhar, Jagadeeshwar Yehamandram1946USAFF18B+27B=28N1.54.04.01.501818-20.4
26Samanta, Aayansh1841USA5B+11N6B17N27N1.010.511.52.501723-25.9
27Zhou, Alexander Zheng1831USAF3B11N25N+26B1.08.58.51.001703-25.6
28Ramnath, Architsai1885USA10N=20B13NF=25B1.08.08.01.501760-25.2
29Wang, Kevin2171USA=9B14N=22B31NF1.07.57.52.001678-52.8
30Regam, JessicaWFM1937USAFF+23N15N6B1.06.56.51.501993+3.6
31Chen, Brandon Joseph1833USAFFF+29B13N1.03.53.51.002062+21.6
32Mujumdar, Sameer2054USAFF4B=14N8B0.58.58.51.251633-31.8
33Wang, William J1823USA6B8NF=10BF0.58.58.51.251702-8.0
34Beckman, Thomas1842USA19BF7N11B18N0.09.59.50.001068-37.2

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets