Hugo Gaston defeated Yoshihito Nishioka 6-4, 3-1 at the Miami Masters (M1000) on hard court in the first round on 20 March 2025, causing an upset as Nishioka entered the match as the pre-match favourite at 1.65 odds to Gaston's 2.33. The Frenchman's victory demonstrated control in the opening set, securing it 6-4, before establishing a commanding position in the second set with a 3-1 lead when the match was recorded. Gaston's upset win suggests improved form heading into the tournament's deeper rounds, while Nishioka's loss marks a disappointing start to his Miami campaign despite being seeded higher in the betting markets.