Manager Bud Black officially announced Sunday that Gray will start Wednesday's National League wild-card game against the Diamondbacks, Thomas Harding of MLB.com reports.
This announcement doesn't come as much of a surprise, as Gray was clearly the Rockies' best starter during the regular season. The 25-year-old compiled a 10-4 record while posting a 3.67 ERA (3.17 FIP) and 24.3 percent strikeout rate over 110.1 innings pitched. He'll face a tough test against a potent Diamondbacks' lineup in hitter-friendly Chase Field.