World No 3 Iga Swiatek suffered her first opening-round defeat in 74 WTA tournaments, falling 1-6, 7-5, 6-3 to world No 50 Magda Linette at the Miami Open. The Polish six-time Grand Slam champion struggled after a dominant first set, losing 88% of her first-serve points in the final two sets. Linette will face Alexandra Eala in the third round.

Swiatek's 73-match streak of opening-round victories since 2021 ended dramatically as she squandered two match points at 5-2 in the second set. The 22-year-old admitted feeling mentally unsettled, saying tennis "feels complicated in my head" and that she hasn't experienced such struggles in five years. Linette praised Swiatek's influence on Polish tennis while celebrating her biggest career win.

Elsewhere, Brazilian teenager João Fonseca defeated Fabian Marozsan 6-4, 3-6, 6-2 to set up a second-round clash with World No 1 Carlos Alcaraz. The 19-year-old, coming off a close loss to Jannik Sinner at Indian Wells, views the matchup as crucial development for his young career. Alcaraz, who received a bye, enters on an 18-match winning streak that included his Australian Open title and youngest career Grand Slam achievement.