Tyler Skaggs will start Friday night versus the Rockies. Skaggs is replacing Trevor Cahill, who hit the 15-day disabled list earlier this week with a bruised hip and ego. Skaggs has posted a 5.40 ERA over his first three starts this year in the major leagues and is a risky fantasy play against Colorado. The 21-year-old left-hander is being floated as a potential trade candidate as the Diamondbacks look to bulk up for a postseason run.