Under warmer weather, Leyland said, Dirks might have been available to pinch-hit, though running would've been a concern. Saturday's cooler conditions, with a first-pitch temperature of 43 degrees for Game 1, ruled that out for Leyland.
"He might be able to pinch-hit [Sunday]," Leyland said. "The prognosis is after Monday, he'll be full-go."
With Dirks out, Brennan Boesch -- who turned his left ankle in his final at-bat Thursday night -- served as the designated hitter in the opener against the Rangers, which the Tigers lost, 10-4. Ryan Raburn played right field. Miguel Cabrera was the designated hitter for Saturday's nightcap, with Boesch returning to right.
Look for Prince Fielder to get a game as the DH on Sunday as a way to get him off his feet for part of the day.