Miami Open champion Danielle Collins won her 12th straight match and will play for a second straight title, defeating Maria Sakkari 6-3, 6-3 in the Charleston Open semifinals on Saturday. Collins will go for lucky No. 13 in Sunday's final against Daria Kasatkina, who beat top-seeded Jessica Pegula in a third-set tiebreaker. Kasatkina won six of the final eight points for a 6-4, 4-6, 7-6 (5) victory.
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