On Thursday, Scott Snodgress and Keenyn Walker joined a list of impressive performances by the White Sox farm system this spring. Snodgress made one bad pitch in a three-inning start while Walker doubled, scored two runs, stole a base and showed off a strong arm with an outfield assist in a 4-3 loss to the Milwaukee Brewers. Walker, a supplemental first-round pick in 2011, has reached base in five of his first 13 plate appearances. The White Sox have also received good play from outfielder Jared Mitchell, catcher Josh Phegley and pitcher Simon Castro, among others in the team’s first six games. “(Walker has) looked great,” manager Robin Ventura said. “From last year to this year it's a good improvement that you see guys get better and just mature and you know, kind of grow in the system.” Snodgress, a fifth-round choice out of Stanford in 2011, isn’t down about his performance after he limited the Brewers to two runs, two hits and a walk in three innings. Had he not hung a curveball to Khris Davis, Snodgress’ first start would have been nearly perfect. “I felt great about it. I hung that curveball and made a mistake there, but I’m going to learn from and hopefully not make that same mistake again. But other than that, I felt things were very good and an improvement from my last outing.”