Dominika Cibulkova pulled out of this week's Porsche Tennis Grand Prix in Stuttgart due to a wrist issue.
Last year's Wimbledon Girls' singles runner-up cracks a mileston.
The Indian-Uruguayan pairing won their first Masters 1000 title.
Sharapova opens with Vinci, could face Radwanska in round two grudge match.
World No. 1 puts Serena at top.
There's awesome gets and then there is this defensive wizardry from Rafael Nadal.
David Goffin earned his first victory over Novak Djokovic to reach the Monte-Carlo semis.