Record Before the Final: What Puripol Boonson's 9.91 Seconds Actually Proves

Puripol Boonson ran 9.91 seconds to win the men's 100m semifinal at the 2026 Asian Games in Nagoya, improving Su Bingtian's 2026 Games record of 9.92 by 0.01 seconds. The mark is provisional because no wind reading was published. Without a legal wind reading, under World Athletics rules the record cannot be ratified. The progress from 9.95 in the heats to 9.91 in the semifinal is a stronger analytical signal than the record itself, suggesting controlled race management. However, the fastest semifinalist often fails to win the final; Su Bingtian ran 9.83 in the Tokyo 2026 semifinal but only 9.98 for sixth in the final. The headline 'record' is a Games record, not the Asian record of 9.83. The teenage benchmark cited in the article belongs to his 20.19 200m mark, not the 100m. The main risks are cumulative load across the 100m, 200m and relay, the unresolved wind reading, and Thailand's dependence on a single athlete. The longer trajectory is strong: SEA Games hat-tricks, an Olympic semifinal, and a first sub-10 second mark for Southeast Asia. The next signals to watch are the final result, the official wind reading, and the 200m/4x100m outcomes.