(click to enlarge)
Nova attributed his Spring Training success to the new slider, so it seems strange that he'd stop using it so soon. It didn't look like a terrible pitch when he used it - of the 26 he threw this year, 15 were thrown for balls, three were called strikes, six were swung on and missed, and two were hit into play. That's a lot of pitches out of the zone, so maybe Nova feels that using the slider too much prohibits him from pounding the strikezone? I can only speculate. Nova currently has the 7th lowest whiff rate among starters, so bringing back the slider, especially on 0-2 and 1-2 counts, might be good for him.