The American Cup 2026 - Open Playoffs
SwissBlitz
7 players participated in this 12-round tournament, held from 04 Mar 2026 to 09 Mar 2026 in St. Louis, MO, United States. 7 titled players. Top 10 Elo average was 2683, and top seed was Wesley So (🇺🇸 USA, GM, 2789).
Wesley So (🇺🇸 USA, GM, 2789) won with 4.5/12, ahead of Awonder Liang (4.0) and Levon Aronian (3.5). So took the lead from round 10.
The biggest upset came in round 1: Awonder Liang (GM, 2563) beat Levon Aronian (GM, 2749), a +186-point gap.
Location
🇺🇸St. Louis, MO, United States
Dates
04 Mar 2026 → 09 Mar 2026
Time control
Blitz: 3 minutes for game with 2 seconds increment from move 1
System
Swiss · 12 rounds
Titled players · 7
GM×7
Federations · 1 represented
🇺🇸United States of America×7
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 12 roundsGM Wesley So led from R3; +0.5-point edge over the runner-up.
Co-leaders
2
2
1
1
1
1
1
1
1
1
1
1
R6 · LEADER CHANGE07 Mar
GM Awonder Liang takes the sole lead (3.5/6).
R1–R10 · UNBEATEN
GM Wesley So went unbeaten across 6 games (R1–R10).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1GMWesley So | * | — | — | ½ 1 |
| 2GMAwonder Liang | — | * | 1 ½ ½ 0 | 0 ½ |
| 3GMLevon Aronian | — | 0 ½ ½ 1 | * | ½ 1 |
| 4GMFabiano Caruana | ½ 0 | 1 ½ | ½ 0 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 | R11 | R12 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | So, WesleyGM | 2789 | USA | +5N | =5B | +6B | =6N | F | F | F | F | =4B | +4N | F | F | 4.5 | 7.0 | 7.0 | 5.25 | 2883 | +7.0 |
| 2 | Liang, AwonderGM | 2563 | USA | +3N | =3B | −4B | =4N | =7B | +7N | =3N | −3B | F | F | F | F | 4.0 | 20.0 | 20.0 | 9.00 | 2719 | +16.0 |
| 3 | Aronian, LevonGM | 2749 | USA | −2B | =2N | F | F | F | F | =2B | +2N | F | F | =4B | +4N | 3.5 | 21.0 | 21.0 | 11.75 | 2689 | -4.0 |
| 4 | Caruana, FabianoGM | 2769 | USA | F | F | +2N | =2B | F | F | F | F | =1N | −1B | =3N | −3B | 2.5 | 24.0 | 24.0 | 10.00 | 2643 | -10.2 |
| 5 | Robson, RayGM | 2621 | USA | −1B | =1N | F | F | F | F | F | F | F | F | F | F | 0.5 | 9.0 | 9.0 | 2.25 | 2596 | -0.6 |
| 6 | Sevian, SamuelGM | 2679 | USA | F | F | −1N | =1B | F | F | F | F | F | F | F | F | 0.5 | 9.0 | 9.0 | 2.25 | 2596 | -2.0 |
| 7 | Dominguez Perez, LeinierGM | 2608 | USA | F | F | F | F | =2N | −2B | F | F | F | F | F | F | 0.5 | 8.0 | 8.0 | 2.00 | 2370 | -6.2 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Liang, AwonderGMUSA+16.04.0 pts · #2
- 2So, WesleyGMUSA+7.04.5 pts · #1
- 3Robson, RayGMUSA-0.60.5 pts · #6
Top rating losers
- 1Caruana, FabianoGMUSA-10.22.5 pts · #4
- 2Dominguez Perez, LeinierGMUSA-6.20.5 pts · #5
- 3Aronian, LevonGMUSA-4.03.5 pts · #3
Biggest upsets
- R1+186 Elo gap