26th Annual Pittsburgh Open - U2100
Open SwissStandard
37 players participated in this 5-round tournament, held from 18 Jul 2025 to 20 Jul 2025 in Pittsburgh, PA, United States. 2 titled players from 4 federations. Top 10 Elo average was 1890, and top seed was Robert M Renk (🇺🇸 USA, 2124).
Pierre J Vachon (🇺🇸 USA, 1853) won with 4.5/5, ahead of Carlos M. Guzman Ortiz (4.0) and Sam Timmons (4.0). Vachon won solo starting round 3.
The biggest upset came in round 2: Anjana Thottimpudi (1676) beat Robert M Renk (2124), a +448-point gap.
Location
🇺🇸Pittsburgh, PA, United States
Dates
18 Jul 2025 → 20 Jul 2025
Time control
Standard: 40 Moves in 80 Min. Del. 30 Sec. / / 30 Min. Del. 30 Sec.
System
Swiss · 5 rounds
Titled players · 2
WFM×1
WCM×1
Federations · 4 represented
🇺🇸United States of America×31
🇨🇦Canada×3
🇵🇷Puerto Rico×1
🇮🇳India×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 5 roundsPierre J Vachon led from R3; +0.5-point edge over the runner-up.
Co-leaders
11
4
1
1
1
R3–R5 · LEAD HELD
Pierre J Vachon held the sole lead from R3 through R5 without losing it.
WIN STREAKS · 2 top finishers
Pierre J Vachon 4 wins (R1–R4)Sam Timmons 4 wins (R2–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Pierre J Vachon | * | — | — | ½ |
| 2Sam Timmons | — | * | — | — |
| 3Joseph Mucerino | — | — | * | — |
| 4Carlos M. Guzman Ortiz | ½ | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Vachon, Pierre J | 1853 | USA | +25B | +15N | +6B | +5N | =2B | 4.5 | 12.0 | 13.5 | 11.50 | 2154 | +63.6 |
| 2 | Guzman Ortiz, Carlos M. | 1907 | PUR | +37B | +18N | =5B | +36N | =1N | 4.0 | 10.0 | 10.5 | 6.75 | 1920 | +1.4 |
| 3 | Timmons, Sam | 1638 | USA | −14N | +34B | +11N | +29B | +7B | 4.0 | 9.0 | 10.0 | 8.00 | 1994 | +90.4 |
| 4 | Mucerino, Joseph | 1888 | USA | =16N | +17B | =36N | +28B | +26N | 4.0 | 7.0 | 7.5 | 6.25 | 2059 | +13.0 |
| 5 | Wang, ChloeWFM | 1875 | USA | +27N | +33B | =2N | −1B | =22N | 3.0 | 12.0 | 13.0 | 5.50 | 1870 | -0.4 |
| 6 | Samanta, Neelansh | 1683 | USA | +34N | +14B | −1N | +20B | −9N | 3.0 | 11.5 | 12.5 | 5.00 | 1754 | +15.2 |
| 7 | Anandheri Kandadai, Srihari | 1757 | USA | +21N | =19B | =26N | +12B | −3N | 3.0 | 10.5 | 12.0 | 6.25 | 1764 | +1.6 |
| 8 | Udeshi, Rishabh | 1489 | USA | −15N | =25N | +31B | +14B | =11N | 3.0 | 8.0 | 9.5 | 5.50 | 1768 | +43.6 |
| 9 | Maralappanavar, Omkar | 1770 | USA | F | F | +33N | +19N | +6B | 3.0 | 6.0 | 6.0 | 6.00 | 2512 | +50.4 |
| 10 | Opaska, Michael | 1824 | USA | F | F | +16N | +35B | +36B | 3.0 | 3.5 | 3.5 | 3.50 | 2581 | +17.8 |
| 11 | Surya | 1777 | IND | =12B | =22N | −3B | +33N | =8B | 2.5 | 11.5 | 12.5 | 4.75 | 1680 | -24.4 |
| 12 | Fitzsimmons, Daniela | 1662 | USA | =11N | +16B | =28N | −7N | =13B | 2.5 | 10.0 | 11.5 | 5.25 | 1780 | +31.6 |
| 13 | Rigai, Jon | 1826 | USA | −17N | +37B | +21N | −26B | =12N | 2.5 | 8.0 | 8.5 | 3.75 | 1590 | -25.2 |
| 14 | Arvind, Charithra C | 1824 | USA | +3B | −6N | =18B | −8N | =17B | 2.0 | 12.0 | 14.0 | 6.00 | 1560 | -68.8 |
| 15 | Steiner-Malumphy, Robin | 1840 | USA | +8B | −1B | =17N | =18N | F | 2.0 | 11.5 | 11.5 | 5.00 | 1674 | -33.2 |
| 16 | Fischer, Jacob | 1698 | CAN | =4B | −12N | −10B | =25N | +37B | 2.0 | 11.0 | 11.5 | 3.25 | 1559 | -28.8 |
| 17 | Wang, Grace Ofia Nuoyi | 1639 | USA | +13B | −4N | =15B | −23N | =14N | 2.0 | 10.5 | 12.5 | 4.50 | 1810 | +38.4 |
| 18 | Guan, Marie Zijun | 1656 | CAN | +20N | −2B | =14N | =15B | −29N | 2.0 | 10.0 | 11.5 | 4.00 | 1661 | +0.8 |
| 19 | Helmsen, Gavin | 1753 | USA | +30B | =7N | =29N | −9B | −20N | 2.0 | 9.5 | 11.0 | 3.75 | 1665 | -6.8 |
| 20 | Khudabukhsh, Ashiqur Rahman | 0 | USA | −18B | F | +24N | −6N | +19B | 2.0 | 9.0 | 9.0 | 4.00 | 1572 | 0.0 |
| 21 | Collins, Patrick Dean | 1702 | USA | −7B | +30N | −13B | +32N | −28N | 2.0 | 8.5 | 10.0 | 3.00 | 1606 | -18.8 |
| 22 | Blokhin, Ilya | 1854 | USA | F | =11B | +27N | F | =5B | 2.0 | 7.0 | 7.0 | 4.25 | 1901 | +7.6 |
| 23 | Renk, Robert M | 2124 | USA | −33N | −27B | +37N | +17B | −24N | 2.0 | 6.5 | 7.0 | 2.50 | 1599 | -70.4 |
| 24 | Legg, Peyton M | 0 | USA | F | F | −20B | +27N | +23B | 2.0 | 5.5 | 5.5 | 3.50 | 1941 | 0.0 |
| 25 | Pierson, Kenneth L | 1634 | USA | −1N | =8B | −35N | =16B | =32B | 1.5 | 11.0 | 12.0 | 3.25 | 1597 | -5.6 |
| 26 | Zhu, AliciaWCM | 1702 | USA | F | F | =7B | +13N | −4B | 1.5 | 9.5 | 9.5 | 4.00 | 1821 | +19.2 |
| 27 | Thottimpudi, Anjana | 1676 | USA | −5B | +23N | −22B | −24B | =34N | 1.5 | 9.0 | 10.0 | 2.50 | 1758 | +10.8 |
| 28 | Zhao, Lawrence | 1852 | USA | F | F | =12B | −4N | +21B | 1.5 | 8.5 | 8.5 | 3.25 | 1751 | -16.0 |
| 29 | Henninger, Austin | 1845 | USA | F | F | =19B | −3N | +18B | 1.5 | 8.0 | 8.0 | 3.00 | 1682 | -13.0 |
| 30 | Meng, Max | 0 | USA | −19N | −21B | F | =31N | +35B | 1.5 | 6.5 | 6.5 | 1.75 | 1648 | 0.0 |
| 31 | FIDE 39988813 | 0 | — | F | F | −8N | =30B | +33B | 1.5 | 5.5 | 5.5 | 1.75 | 1623 | 0.0 |
| 32 | Robinson Jr, Scott | 1768 | USA | F | F | +34N | −21B | =25N | 1.5 | 4.5 | 4.5 | 1.75 | 1636 | -20.8 |
| 33 | Demetruk, David | 1697 | USA | +23B | −5N | −9B | −11B | −31N | 1.0 | 10.5 | 12.0 | 2.00 | 1687 | -3.0 |
| 34 | Nishikawa, Boomba | 1571 | CAN | −6B | −3N | −32B | =37N | =27B | 1.0 | 10.0 | 10.5 | 1.00 | 1370 | -34.8 |
| 35 | Painter, Jacob Daniel | 1863 | USA | F | F | +25B | −10N | −30N | 1.0 | 6.0 | 6.0 | 1.50 | 1729 | -14.0 |
| 36 | Patel, Het | 0 | USA | F | F | =4B | −2B | −10N | 0.5 | 11.0 | 11.0 | 2.00 | 1599 | 0.0 |
| 37 | Butcher, Markle W | 0 | USA | −2N | −13N | −23B | =34B | −16N | 0.5 | 10.5 | 11.5 | 0.50 | 1458 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Timmons, SamUSA+90.44.0 pts · #2
- 2Vachon, Pierre JUSA+63.64.5 pts · #1
- 3Maralappanavar, OmkarUSA+50.43.0 pts · #4
Top rating losers
- 1Renk, Robert MUSA-70.42.0 pts · #32
- 2Arvind, Charithra CUSA-68.82.0 pts · #11
- 3Nishikawa, BoombaCAN-34.81.0 pts · #36
Biggest upsets
- R2+448 Elo gap
- R1+427 Elo gap
- R4+335 Elo gap