Kateřina Siniaková upset pre-match favourite Mirra Andreeva 4–6, 7–6, 6–3 in the Indian Wells R32 on hard court on 9 March 2026. Despite entering as a substantial underdog at 4.86 odds, Siniaková recovered from losing the opening set to force a tiebreak in the second, which she won to level the match. The Czech player then controlled the decider, securing a decisive third-set victory to advance. The result represents a notable scalp for Siniaková against Andreeva, who had been favoured to progress at the Masters 1000 event.