TORONTO -- Seattle Mariners shortstop Ketel Marte has been diagnosed with mononucleosis and placed on the 15-day disabled list.
The Mariners recalled infielder Luis Sardinas from Triple-A Tacoma. He replaces left-hander Mike Montgomery, who was traded to the Chicago Cubs on Wednesday.
Marte complained of a sore throat following Sunday's loss to Houston and didn't play in the series against the Chicago White Sox that followed. Marte didn't travel with the team for an eight-game road trip that begins Friday at Toronto.