Marte complained of a sore throat following Sunday's loss to Houston and didn't play in the following series against the White Sox. He didn't travel with the team for an eight-game road trip that began Friday at Toronto.
Manager Scott Servais said there is no timetable for Marte's return. The second-year player is batting .273 with one homer and 19 RBIs.
Sardinas hit .190 with two homers and five RBIs in 25 games with the Mariners earlier this season. He will split time at shortstop with Shawn O'Malley, who started Friday.
Seattle is expected to recall a pitcher from Tacoma before Saturday's game.