Sharapova is the only one of the top three female players to earn a Western & Southern title, winning in 2011.
The event is her first since losing in the second round at Wimbledon. She’s also been bothered by a hip injury.
“Everything is feeling fine,” the third-ranked Sharapova said.
“I’m at the stage of my career where I have the luxury of making sure. I love playing a full schedule, but I’d rather come in here feeling good and healthy. I haven’t played in weeks, so I might be a little rusty,” she added.