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American Danielle Collins captured her second career title in just a two-week span, holding off No. 4 seed Daria Kasatkina of Russia 6-3, 6-7 (10), 6-1 after a thrilling second-set tiebreaker to win the Mubadala Silicon Valley Classic.
Brazil's Laura Pigossi and Luisa Stefani battled back to win their nation's first-ever Olympic tennis medal.
Daniil Medvedev was struggling so much with the suffocating heat and humidity in the Olympic tennis tournament that at one point the chair umpire asked him if he could continue playing.