Madison Brengle defeated pre-match favourite Dayana Yastremska at the Australian Open in the first round on hard court, with the American prevailing in an incomplete match that finished 6-1 0-6 5-0. Yastremska, who entered as the betting favourite at 1.76 odds, won the opening set convincingly before Brengle mounted a dramatic comeback, levelling the contest by taking the second set to love. The Ukrainian's collapse continued into the third set, where Brengle established an insurmountable 5-0 lead before the match concluded. The result represented a significant upset given the pre-match odds, with Brengle's odds at 2.17 reflecting her underdog status. Brengle's reversal of fortune advances her deeper into the tournament, while Yastremska's capitulation raises questions about her consistency on the Australian hard courts.