Setting the roles of the St. Louis Cardinals bullpen is a crucial piece in having relievers be successful. Some pitchers do better in certain situations, while different pitchers have problems in others. Situational baseball and the proper usage of relievers is very important in ensuring their success.
The injury to Trevor Rosenthal is one of the biggest obstacles to work around. He is obviously one of the more talented relievers we have, but the return of fireball prospect Alex Reyes could certainly help relieve that.
There are also several big names on the market, with a pair of 31-year olds leading the charge in Wade Davis and Greg Holland.