Whoever they pick, Hendricks is going to knock them off the roster in 48 hours or so. Given that Grimm threw 43 pitches yesterday and Edwards/Strop/Rondon all threw 15+, it's probably a better bet that Pena can be helpful(even only as insurance) than La Stella's pinch at bat would be. I would have gotten rid of Grimm instead of LaStella but oh well.