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Third-seeded Maria Sharapova battled to a 6-4, 6-2 victory over fellow Russian Elena Vesnina on Sunday to book her fourth-round berth at the Miami ATP Masters and WTA hardcourt tournament.
Sharapova, who won the title last week at Indian Wells, will take on Czech Klara Zakopalova for a quarter-final berth on Monday.
The Russian star has never won the Miami title, although she's reached the final four times.
Steffi Graf and Kim Clijsters are the only women to win both Indian Wells and Miami in the same year -- Graf in 1994 and 1996 and Clijsters in 2005.