"He comes in with very good credentials and put together a nice start in Double-A," Miami manager Dan Jennings said. "We had our evaluators and Double-A pitching coach update us with where he was right now, and they felt that he could come in and help us."
Flores is the Marlins' No. 11 prospect according to MLB.com.
Flores was 3-3 with a 2.06 ERA in 56 2/3 innings for the Suns. He made nine appearances, which were all starts. While Jennings said Flores projects as a starter in the future, the righty will assume a bullpen role for now.
"Right now, he'll start as the long guy out of the 'pen," Jennings said. "Hopefully we won't need him tonight in that capacity. But with us going to Colorado [from Friday to Sunday] and then [Toronto from June 8-June 10] where we'll have a [designated hitter], we felt that it was better for us to have that extra pitching."
Flores was scheduled to start for Jacksonville on Monday, but he was pulled from his outing in anticipation of his promotion.
"He's rested and ready," Jennings said.
Steve Wilaj is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.