MIAMI (AP) — Aryna Sabalenka clearly labored in the final set of her match. Frances Tiafoe seemed to barely have the energy needed to reach the post-match handshake. Conditions were tough at the Miami Open. The top seeds, however, were up to the challenge. World No. 1 Ash Barty of Australia won the final nine points to finish off the seventh-seeded Sabalenka in a three-set women’s quarterfinal Tuesday, while men’s top-seeded Daniil Medvedev of Russia reached the quarters with a straight-set win over Tiafoe. Sebastian Korda of the U.S. made the quarterfinals.
