"He's doing no baseball activities," Rand said. "He did no baseball activities yesterday, he will be doing no baseball activities again today."
Past that, neither Rand nor Dirks could say when the outfielder may return. But for now, the 26-year-old is scheduled for rest and constant treatment. Dirks underwent an MRI exam and X-rays on Friday, and the results came back "mostly" as the club expected.
"A little bit of bursitis, a little bit of tendinitis," Rand said. "We're proceeding to, obviously, treat and try to get him back out on the field."
Dirks' injury originally sprung up in Boston, which kept him out of the lineup for the rest of the series due to what manager Jim Leyland originally called precautionary reasons. The injury became a concern after Dirks reported that it felt worse on the second day.
It's unclear whether Dirks will need a stint on the disabled list, but the Tigers could be forced into making a move with catchers Alex Avila and Gerald Laird also hurting and Ramon Santiago their only player available off the bench for Saturday's game.
Dirks, however, did say the pain hasn't been quite as bad over the past two days.
"It's better than it was a couple days ago," Dirks said. "As far as a pain scale, I don't know how to do that. But if it keeps you off the field, it's keeping you off the field [because] it's hurting. We're trying to get it back as quick as we can, but hopefully in the next couple days or so it feels fine."