Sharapova trying to overcome problem with her arm

In her latest "Weekley Doodle" entry on her website, Maria Sharapova says she has been doing something she usually reserves for the off-season: tinkering for several hours a day with different racquet weights and string tensions. She says that ever since Indian Wells, "I haven't been able to get my arm up and close to my head without some sort of impingement and grinding...."

Sharapova reports that for the last week, she has been playing with a new Prince frame.