Hidden beneath the mediocre surface stats of Lance McCullers over the last 12 months lies an attractive and emerging skill package that includes a high rate of strikeouts and groundballs.

Behind James Paxton's rough stats in June were a collection of superb skills driven by an upper-90s fastball and three legit strikeout pitches.

The gradual skill erosion of Matt Harvey the more times he goes through lineups in a game has been the primary reason for his struggles so far in 2016.

Some bad luck with runners on base has driven Jon Gray's near-5 ERA, but his excellent skills with the bases empty and with runners on base suggest he could be in store for a big second half.

Danny Duffy's recent emergence and upper-tier skills both at home and on the road position him as an intriguing target who won't be available for much longer in many leagues.

Michael Fulmer's electric skills against right-handed batters has helped him take a huge early step forward so far in 2016.

Behind his improved knuckle-curve and changeup, Alex Wood has posted the best skills of any SP not named Kershaw during the month of May.

Aaron Sanchez's transition back to a starting role has been a success, as shown by his big SP skills growth from 2015 to early 2016.

It may be easy to buy in to the quick early start of Jordan Zimmermann. But his lack of underlying skills points to some significant regression on the horizon.

Former first-round pick Aaron Nola's excellent early start confirms his profile as a young mid-rotation building block.

The slow start of David Price is hiding the best skills of any AL hurler.