A star-studded field is set to line up at the Porsche Tennis Grand Prix in Stuttgart, including top seed Agnieszka Radwanska.
The WTA Premier event, played on indoor clay in Germany, may be without the world's top two in Serena Williams and Li Na, but there will still be plenty of quality on show.
Two-time defending champion Maria Sharapova returns for her first clay-court tournament of the year.
The Russian, who will be seeded sixth for the event, last played in Miami, where she reached the semi-finals before being beaten again by Williams.
With Williams absent and Li (knee) injured, Sharapova should be eyeing a hat-trick of titles at an event she enjoys playing.
But she is one of seven top-10 players in the field, which should make for plenty of competition for the title.
Radwanska has been on a strong run, including reaching the semi-finals at two of her past three tournaments.
Romanian Simona Halep has burst into the top 10 and is enjoying another strong year, having reached the Australian Open quarter-finals.
Czech left-hander Petra Kvitova will be looking for a good run and Serbian Jelena Jankovic is fresh from making the final in Bogota.
Australian Open runner-up Dominika Cibulkova is the last of the top-10 players in the field, but her form has been lacklustre.
German duo Andrea Petkovic and Julia Gorges have received wildcards, as has Russian Svetlana Kuznetsova.
Petkovic looks to be regaining some of her best form and comes into the event after winning the tournament in Charleston.
A bit of luck will be needed to go all the way against such a talented field, with form and a winning record in Stuttgart a key.
Radwanska and Petkovic are the form players heading in, while Sharapova will have plenty of happy memories.