David Ferrer sent top seed and eight-time champion Rafael Nadal out of the Monte Carlo Masters with a 7-6 (1) 6-4 win.
Laura Robson will miss the French Open and Wimbledon after deciding to have minor wrist surgery.
Dominika Cibulkova reached the quarter-finals of the BMW Malaysian Open with a straight-sets victory over Hsieh Su-wei.
Britons Johanna Konta and Heather Watson have just missed out on a place in the main draw of the French Open.
Andy Murray and Martina Navratilova are among a host of star names who will help raise money in June to fight cancer.
The full schedule for this year's expanded WTA Championships in Singapore has been announced.
The French Open will pay total prize money of more than 25million euros at this year's tournament.
As the European claycourt season gets under way, our Andy Schooler brings you his latest Net Talk column.