Stéfanos Tsitsipás defeated Daniil Medvedev 6–3, 6–4 in the ATP Masters 1000 round of 16 at the Doha hard court event on 18 February 2026, an upset result against the pre-match favourite. Medvedev entered as the betting preference at 1.32 odds, while Tsitsipás was positioned as the underdog at 3.33, yet the Greek player's superior court control and consistency across both sets proved decisive. Tsitsipás's straight-sets victory, achieved without dropping a set, demonstrated his capacity to neutralise Medvedev's typically formidable baseline game. The result marks a significant head-to-head statement and advances Tsitsipás into the quarter-finals while raising questions about Medvedev's form at this stage of the season.