The Pittsburgh Pirates will have a new face for their twin bill against the Cincinnati Reds on Monday, as the club will promote top prospect Mitch Keller to start on the mound, according to Jonathan Mayo of

The 23-year-old right-hander is a former second-round pick and is the No. 1 prospect in the Pirates' system. Even further, Keller is the No. 4 right-handed pitching prospect in the game and the No. 21 overall farmhand.

Keller earned a promotion to Triple-A midway through 2018 and has authored a 4.17 ERA and 1.49 WHIP over 19 starts with a 10.2 K/9 and 3.8 BB/9.