Though not quite Dylan Bundy or Zack Wheeler, Carlos Martinez is one of the game's more highly regarded pitching prospects -- has been for a couple years now -- so you'd think his promotion would prompt mad dash to the waiver wire in Fantasy.
But it won't, not with him designated for relief.
The Cardinals' decision to break him in as a reliever shows just how desperate they are for bullpen help. Presumably, they won't want him to get too comfortable there. He's more of an asset as a starting pitcher, and he's obviously plenty capable in that role.
Now, if he eventually supplants Edward Mujica as the closer, that mad dash will still happen, but I doubt the Cardinals would elect to go that route with him. As the Reds discovered with Aroldis Chapman, once a pitcher establishes himself as a dominant ninth-inning guy, removing him from that role is easier said than done.