Henry will start Thursday's spring training opener against the Rockies, Nick Piecoro of the Arizona Republic reports.
Diamondbacks manager Torey Lovullo said the roster for their Cactus League opener will primarily be prospects and minor-leaguers. The left-handed Henry, Arizona's 16th-ranked prospect per MLB.com, toiled in Double-A for the Amarillo Sod Poodles in 2021, when he posted a 5.21 ERA and 1.46 WHIP over 23 games and 115.2 innings. Lovullo said pitchers Caleb Smith, Joe Mantiply and J.B. Bukauskas -- all with MLB experience -- will each toss an inning, as they "came in as prepared as possible."