The Grapefruit and Cactus League exhibition slates don't begin until Friday, but there will be Major Leaguers in action Wednesday as the D-backs host Arizona State University.
The exhibition is scheduled for 3:10 p.m. ET at Salt River Fields at Talking Stick.
Right-hander Taylor Clarke will start for the D-backs. The 24-year-old was Arizona's third-round Draft pick in 2015 and is the club's No. 3 prospect, according to MLB Pipeline.
• Spring Training info | Tickets | Schedule
:: Spring Training coverage presented by Camping World ::
The D-backs held their first full-squad workout Monday, and position players faced pitchers in batting practice Tuesday. They begin Cactus League play Friday against the Rockies at their shared Spring Training facility.
Both the D-backs and Rockies will wear Marjory Stoneman Douglas High School baseball caps Friday in a league-wide show of support for the Parkland, Fla., community after the tragic shooting at the school on Feb. 14. Players will sign the caps and auction them, with proceeds going toward the Broward Education Fund, which benefits the official Stoneman Douglas Victims' Fund.