Maria Sharapova has signed up to play in the Wimbledon grass-court warmup in Birmingham in June. The 13th-ranked Russian is a two-time champion at the AEGON Classic, having won back-to-back titles in 2004 and 2005. Sharapova said she is looking forward to playing "at this important time in the grass court season." The Birmingham tournament runs from June 7-13 at the Edgbaston Priory. More...