Martinez was hospitalized on Thursday and remains there as of Friday evening.
The Tigers placed Victor Martinez on the 10-day disabled list after he was hospitalized on Thursday and diagnosed with an irregular heartbeat, The Detroit News reports.
Martinez, 38, was released from the hospital on Saturday morning but will remain in Detroit for further testing.
Martinez had two hits during Thursday’s game, but left after experiencing dizziness in the seventh inning.
“I talked to him,” manager Brad Ausmus said. “It’s scary. It’s not something at his age (38) you would generally consider an issue or something to worry about. But that said, he was making it through. There is a little bit of an unknown factor to it, which causes more anxiety than anything else.”