As the whiffs and grounders on his changeup have decreased , there 's been a concurrent increase in both of those categories on his curveball .
The good news is that this is not a universal decline across Strasburg 's arsenal .
As the whiffs and grounders on Strasburg 's changeup have decreased , there 's been a concurrent increase in both of those categories on his curveball .
The good news is that this is not a universal decline across Strasburg 's arsenal .