Sharapova shook off a first-set loss to beat Poland's Agnieszka Radwanska 1-6, 6-2, 6-2 on Saturday in the Bank of the West Classic to set up a championship match against Victoria Azarenka. Azarenka, from Belarus, celebrated her 21st birthday with a 6-2, 6-3 victory over top-seeded Samantha Stosur 6-2, 6-3.