It's got a hell of a lot of upside, and will definitely get you the K's, but is inexperienced (or in Clement's case, has control issues) so you might get the odd shelling. In H2H you might just have gotten a couple of crappy starts falling together.
The loss of Escobar has clearly hurt too.
And it may be just me, but as a spot starter I'd rather choose someone whose park was a little less bomb-prone. Are the spot starters in there for two-start value?