An Se-young booked her place in the 2026 Badminton Asia Championships women's singles final and put herself one win from completing her career grand slam, but the men's draw produced a surprise: world No. 1 Kunlavut Vitidsarn crashed out at the semifinal stage in one of the most consequential upsets of the badminton year so far.
The Korean world No. 1 was once again the dominant figure in the women's draw, dispatching her semifinal opponent in straight games to secure a final-day appointment with the chance to add the only major individual title still missing from her trophy collection. An has won the Olympic gold, the World Championship gold, the BWF World Tour Finals title and the Uber Cup; the Asian Championships title — which she would seal a day later — is the one that completes her career grand slam.
Akane Yamaguchi joined her in the semifinals, with the veteran Japanese world No. 4 producing the kind of patient, deep-rotation performance that has carried her to two World Championship golds. The semifinals on either side of the women's draw also featured Chen Yufei and Carolina Marin in earlier rounds, though both fell before the closing stages — Yufei to a three-game collapse against an in-form Indonesian, and Marin still chasing form on her gradual return from knee surgery.
The men's draw, by contrast, produced a result very few analysts had projected. Kunlavut Vitidsarn, the new world No. 1 and one of the youngest players to hold the top ranking in recent memory, was beaten in his semifinal — the second consecutive major event at which the Thai star has been pushed before the final by an in-form Japanese opponent. The defeat ended an unlikely Asian Championships title run for the world No. 1 and tilted the men's draw toward the South Korean and Indonesian camps for the final day.
The semifinal stage also confirmed the wider story of the post-Axelsen men's singles game. With the retirement of two-time Olympic champion Viktor Axelsen announced in mid-April, the men's tour has spent six months looking for a clear hierarchy. Kunlavut, Jonatan Christie, Anders Antonsen and Loh Kean Yew have all been at world No. 1 or No. 2 across the past year, but no single player has stamped a sustained pattern of dominance the way the Dane did during his peak. Kunlavut's defeat in Wuhan suggests that the hierarchy will continue to shift on a week-by-week basis throughout 2026.
Indonesia's Jonatan Christie also exited at the men's quarterfinal stage, alongside Loh Kean Yew, in the earlier round — a pair of results that left the semifinal stage thinner than the federation's marketing department would have hoped for. The result also frees up ranking points for the chasing pack, with Anders Antonsen, Lee Zii Jia and the young Chinese contingent each positioned to capitalise across the remaining tour events.
For An Se-young, the semifinal win was the formality that the field expected. Her form across the early months of 2026 has been one of the dominant stories of the women's game; she has now won at least a final-stage match at every major event she has entered, and the Asian Championships title that followed has become the final brick in a career grand slam that placed her in the historical company of Lin Dan and Saina Nehwal — players who completed all available major women's singles trophies in their respective careers. With the Sudirman Cup still on her 2026 to-do list, An's focus shifts to the team event in which the rest of the Korean squad will need to step up alongside her. The Wuhan semifinals delivered both the expected outcome on the women's side and the upset that may define the men's tour for the rest of the year.