His third offering , a below - average slider , needs work .
Should he be able to perfect the pitch in spring training , Severino would have three outstanding pitches worthy of future ace status and a guaranteed spot in the Opening Day rotation in 2016 .
His third offering , a below - average slider , needs work , and should he be able to perfect the pitch in spring training , Severino would have three outstanding pitches worthy of future ace status and a guaranteed spot in the Opening Day rotation in 2016 .