Pittsburgh boasts a relatively deep pool of relievers, but Rainey could sneak onto the roster if he continues to perform well.

Unlike some spring training nonroster invitees, Tanner Rainey knows what it takes to play at the game's highest level. Not long ago, he was pitching in ...

the exception of Kyle Finnegan and Tanner Rainey.” Finnegan ... This guy pitches at the back of a baseball game. He’s proven that he can handle the closer’s role. I don’t think we were ...