Jordan Thompson defeated Casper Ruud 7–6, 6–1 in the first round of the ATP 250 Tokyo tournament on hard court, delivering an upset against the pre-match favourite. Ruud, seeded higher with odds of 1.69, could not maintain consistency after a competitive opening set decided in a tiebreak. Thompson, at 2.28 odds, dominated the second set to secure a commanding victory. The Australian's aggressive performance in the second frame, where he surrendered only one game, demonstrated superior court control and mental resilience after the tight first-set contest. This result marks a significant statement from Thompson, who dismantled a top-ranked opponent to advance deeper into the tournament.