Manager Tony La Russa said Tuesday that the club believes Holliday will return soon enough to justify keeping him on the active roster even while he's unavailable for the time being.
"I just think he's making enough progress now [that] we think he'll be back before 15 days," La Russa said. "So we're just going to keep going until we get him back. ... It appears that he's going to be ready before the disabled period -- quite a bit before the disabled period. He's a valuable guy."
Holliday rode an exercise bike on Monday, his first real physical exertion since the surgery on April 1. On Tuesday, he ramped his work up a bit, playing catch and running. He may swing a bat on Wednesday, and he expects to accompany the club when it leaves for San Francisco on Thursday.
"So far, so good," Holliday said. "I think the big test will be swinging."