Its the same problem Parker identified in the offseason, Worley's lack of a 3rd pitch. Take a look at his contact rates on his 2ndary pitches so far. According to fangraph's pitch classifications at least, every single Changeup thrown for a strike and swung on has been contacted. Every single curveball swung on has been contacted whether it was in the zone - or, out of the zone. 100%! The sample sizes are still small but that is not a good sign. Contact rates for hitters at least, are among the first things to stabilize. Guys who don't have a 3rd pitch belong in the pen.