More on Tago: http://dashboard.mlblogs.com/2015/08/06/da...-major-success/
"Former Dash right-hander Peter Tago mainly used a curveball as a secondary pitch during his first four years of professional baseball after being drafted by the Colorado Rockies in the supplemental first round, 47th overall, in 2010.
However, upon arriving to White Sox Spring Training in February after being taken in the Triple-A phase of the Rule V Draft, Tago worked with Dash pitching coach J.R. Perdew and Kannapolis pitching coach Jose Bautista to develop a slider. The results have been staggering: During the four years Tago spent in the Colorado system, lefties bashed him to a .276/.406/.408 tune. However, across Kannapolis, Winston-Salem and Birmingham this season, left-handed batters have only hit .211/.302/.276.
“It’s just an easier pitch for me to throw as far as secondary to lefties,” said Tago, who was promoted to Double-A Birmingham on July 25. “It’s hard and it’s not easy to pick up out of my hand as compared to when I was throwing a curveball previously in my career.
“It’s based off the fastball – I can throw it with the same arm speed and same arm action as my fastball, and that is what gets the hitter to commit.”