White Sox pitcher Jose Quintana has seen an uptick in his strikeout rate this season due to increased velocity with his fastball.
Quintana's fastball has jumped from 91.05 mph to 92.25 mph in 2013. The increased velocity has helped Quintana get more strikeouts. His whiff rate has jumped from 6.75 percent to 10.57 percent with the pitch. It's become his main two-strike pitch against both righties and lefties.
Quintana's improvements have led to solid Fantasy output, with a 3.71 ERA in 114 innings.