Cardinals pitcher Michael Wacha has been cleared to begin throwing, after an MRI taken on his right shoulder showed considerable signs of healing since he was shut down.

Wacha had the MRI taken Monday, and is scheduled for a follow-up in two weeks to determine how his shoulder is responding to the increase in activity. Wacha has been sidelined since June 17 due to a stress reaction in the right shoulder, and general manager John Mozeliak told the St. Louis Post-Dispatch he thinks Wacha might be able to pitch again this year.

"At the end of the day, it's whether you do or you don't," said Mozeliak. "But 'optimism' is a fair word right now."