"Felix was very optimistic yesterday about his day," manager Eric Wedge said prior to Saturday's game. "He's going to throw a bullpen Monday, so we feel he's going to be able to get back into it."
The club has set Joe Saunders to start Monday against the Tigers, followed by rookie Brandon Maurer on Tuesday. But the Wednesday and Thursday starters in the four-game series won't be announced until Hernandez's situation is clarified.
The Mariners currently are going with a six-man rotation, including Hernandez. So if he does throw Wednesday in Detroit, he'd likely have one more start after that on Tuesday, Sept. 24, against the Royals in Seattle.
Greg Johns is a reporter for MLB.com. Follow him on Twitter @GregJohnsMLB as well as his Mariners Musings blog. This story was not subject to the approval of Major League Baseball or its clubs.