Dickerson was jogging Tuesday morning in Kansas City when the tendon apparently ruptured. He underwent an MRI exam on both legs, but it appears only the left one has structural damage that requires surgery.
Dickerson will miss the rest of the Tigers' road trip, including the upcoming four-game series at Baltimore, but there's optimism that he could be back for the start of next week's homestand Tuesday at Comerica Park.
Manager Jim Leyland talked to Dickerson Wednesday morning.
"I feel terrible," Leyland said. "What a great guy. I feel bad for him. He's got some issues, and we really send him our best."
John Keating filled in on the Tigers' radio broadcast Wednesday for the second straight game, while Jim Price handled play-by-play. No plans have been announced yet for the Tigers' radio team for the next series.
Dickerson is in his 10th season with the Tigers radio network, and his seventh as the lead radio play-by-play voice. He succeeded Ford Frick Award winner Ernie Harwell following his retirement in 2002.
Jason Beck is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.