Phillies reliever Ken Giles said Thursday he remains on track to be ready for Monday's season opener against the Red Sox, per MLB.com. Giles, who left Tuesday's spring game with a mild mid-back strain, played catch Thursday.

"I let it loose," Giles said. "No pain. No nothing."

The Phillies have said they would like to see Giles throw off a mound at least once before finalizing their roster. The Phillies have exhibition games against the Pirates on Friday and Saturday.