Australian Open winner Azarenka next faces world number two
“"Agnieszka always brings out the best in me," said the Belarus player after cruising to a 6-1 6-3 win. "“I'm very happy with the way I played."
Azarenka had already beaten Radwanska in Sydney, at the Australian Open quarter-finals and in Doha and Indian Wells, California.
The 22-year-old, who has lost only one match this season, went on to win all four tournaments.
Sharapova saved break points in three successive service games during the second set and also a set point before wrapping up the match 7-3 in the tiebreak.