The Marlins will call up Jacob Turner to start on Wednesday.

Turner was a first-round pick of Detroit in 2009. Miami has a double-header on Wednesday against Arizona.

"I don't know what game he will start. Probably the early one,’" manager Ozzie Guillen said. "After that, we have to (decide) if he will stay or (go) back (to New Orleans)."

Turner is considered the most promising prospect of all the players the Marlins obtained last month when they traded away four players.