Marlins president: 'We really don't know' when Cosart will return from DL

Miami Marlins president of baseball operations Michael Hill didn't really care to venture a guess Monday as to when Jarred Cosart, addled by a bout of vertigo, might return from the disabled list.

"It depends on how long it takes for it to evolve," Hill told Clark Spencer of the Miami Herald. "It's really uncharted territory. It's not like an elbow that needs to heal, or inflammation in the shoulder. We're cautiously optimistic that (he'll return) shortly after 15 days, but we really don't know."

The 25-year-old right-hander is eligible to return from the DL Friday, but Cosart is expected to make at least one minor-league rehab start before rejoining the rotation. Cosart - who developed vertigo after enduring a sinus infection earlier this month - hasn't pitched since May 13, when he was lifted from his start against the Los Angeles Dodgers due to a hamstring cramp.

Through seven starts this season, Cosart owns a 4.08 ERA (98 ERA+) with a 1.16 WHIP in 39 2/3 innings, and represents one of four Marlins starters - along with Jose Fernandez, Henderson Alvarez, and Mat Latos - currently consigned to the DL.