Wesley So won the American Cup after defeating Levon Aronian by a 1½–½ score in the Grand Final. Having taken the lead by winning the first game of the match with the black pieces on Tuesday, So only needed a draw with white on Wednesday to secure the title, and he achieved exactly that. The second classical game ended peacefully after 33 moves.
The concluding game arose from a Giuoco Piano, and So's approach with white reflected the match situation from the outset. Rather than seeking complications or middlegame imbalances, he consistently aimed for simplification. One telling example came with 11.Nd5, a practical choice in the circumstances.
Under different match conditions, White might more naturally opt for moves such as 11.Ne2 or 11.Re1 in order to preserve richer possibilities.
From there, Aronian failed to find an effective way to create a sufficiently imbalanced configuration. In the final position, they repeated moves with 30.Ne1 Qc3 31.Nf3 Qc5 32.Ne1 Qc3 and so on.
Black had no realistic way to deviate without risk: for instance, after 31...f6, White would have 32.Nh4, and Black would then be forced to respond with 32...Ng7 in order to meet 33.Qg4 with 33...g5 (diagram below).
Even then, White would at the very least be very likely to force a perpetual by invading along the light squares.
Levon Aronian arrived in the Grand Final much more tired than his opponent, since he played more matches while in the Elimination Bracket | Photo: Lennart Ootes
This is So's first American Cup title, achieved after taking part in all five editions of the double-elimination tournament organised by the Saint Louis Chess Club. Twice before he had reached the Grand Final, only to fall short at the last stage: in 2023 he lost to Hikaru Nakamura, and in 2024 he was defeated by Aronian.
This year, however, his run was notably steady. He won the Championship Bracket by defeating Ray Robson, Sam Sevian and Fabiano Caruana, all by identical 2½–1½ scores. Against both Robson and Sevian, the classical portions ended with two draws, before So prevailed in the blitz tiebreakers. His match against Caruana was more difficult, as he lost the first classical game, then had to win on demand to force blitz, where he once again came through after the first pair of three-minute games.
The Grand Final itself was comparatively straightforward by comparison: after the smooth win with black in game one, he only needed a safe draw to close matters out.
American Cup champion Wesley So | Photo: Lennart Ootes
The American Cup title is So’s second major success of the year. In January, he won the Tata Steel India Blitz tournament with 13/18, finishing ahead of players such as Praggnanandhaa Rameshbabu, Wei Yi and Vishy Anand. His run of strong results also follows on from August last year, when he won the Sinquefield Cup for the second time in his career, having previously taken that title in 2016.
Long regarded as one of the most respectful figures on the circuit, both towards fellow players and towards arbiters, organisers and others in the chess world, So marked this latest success by publicly thanking Rex and Jeanne Sinquefield on X and acknowledging their importance in his career development.
Thank you to Rex and Jeanne Sinquefield for having me at this event! I owe them so much as far as my chess career is concerned. Thank you to all the @STLChessClub staff as well for being so kind to me. Everyone concerned makes sure it is a pleasure to play in St Louis. From food…
— Wesley So (@WesleySo_) March 11, 2026
While the open Grand Final ended relatively quickly and produced a clear winner in Wesley So, the women's title remains undecided and will require a Grand Final Reset on Thursday.
After an extremely tense 66-move draw in the first classical game, Carissa Yip and Alice Lee again produced a long struggle on Wednesday. Their second classical encounter lasted 77 moves. It was not as dramatic or swing-filled as the previous day's battle, but it was still a serious fight, with both players probing throughout for small chances to create imbalances.
The start of the classical game | Photo: Lennart Ootes
Because Yip came into the Grand Final from the Elimination Bracket, the drawn classical match meant she needed to win the tiebreaks in order to force a reset.
At the start, things moved in Lee's favour. In the first blitz game, Lee survived a clearly losing position and then capitalised on a one-move blunder by Yip to take the lead.
Here Lee faltered with 35...Nxd5?, allowing 36.Rxf7 Kxf7, and now the best continuation is 37.Bxd5+, though Yip opted for the also strong - yet not as effective - 37.Rxd5
Incredibly, Lee not only escaped with a draw, but managed to win after Yip blundered (when both contenders had only seconds on the clock) by playing 49.f4+??
Yip forgot that the bishop was hanging on e2, so she had to resign soon after 49...Rxe2+. Had she played 49.Nf4+, the battle would have continued, with White having the better chances to score a win thanks to her tricky knight.
Carissa Yip | Photo: Lennart Ootes
That left Lee requiring only a draw with white in the second game to win the title outright. Yet that second game soon became uncomfortable for her, and Yip obtained the better position. Yip did miss one particularly strong chance when she chose 23...Rf8? instead of the much more forceful 23...f4, which would have kept Black firmly in control.
After the missed opportunity, the balance was gradually restored and the game moved into a major-piece endgame. Even so, it was Lee who made the final and decisive error: 36.Kg2?? allowed Yip to win immediately, levelling the tiebreak score.
36...Rf7 here is devastating - the game concluded after 37.Qa1 Qf3+ 38.Kg1 Qe3+
Alice Lee getting in the zone before the start of yet another blitz battle | Photo: Lennart Ootes
The next pair of blitz games also failed to separate the players, though not for lack of decisive action. After both had earlier won with black, they now traded wins with the white pieces. In the first of these games, Lee generated strong attacking chances, managed to double her rooks on the seventh rank and finished the game neatly with 42.Qxg6+
Yip then found herself once again in a must-win situation, and once again she delivered. This time she obtained a winning advantage straight out of the opening, and by the moment she got to play 22.Qg5 her position was completely dominating.
Notably, after getting such a good position, Yip was hesitant in conversion and only managed to secure the full point that kept her alive in the endgame - the encounter lasted 55 moves.
Blitz action at the Saint Louis Chess Club! | Photo: Lennart Ootes
All of that meant the match had to be decided by Armageddon. In the American Cup, the colours for the sudden-death game are determined by drawing lots, and Yip ended up with black. That gave her draw odds, though at the cost of starting with two minutes to Lee's three (with two-second increments for both).
Under those conditions, Yip again held her nerve impressively. She first equalised in the middlegame and then gradually took over, eventually reaching a completely winning position. By the time she played 35...Ra2, the commentators were already of the view that Lee had very little chance of generating winning opportunities.
The draw that Yip needed was never in serious doubt by that stage, and the result sent the match into a reset.
Lee and Yip will therefore return to the Saint Louis Chess Club on Thursday for one final stage of the event. The women's title will now be decided in a two-game rapid match at G/25+10, with a blitz playoff at G/3+2 if the score remains tied.
Carissa Yip during the post-match interview with Maurice Ashley | Photo: Lennart Ootes
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