Ortiz will be called up from Triple-A Indianapolis to start the second game of Tuesday's doubleheader against the Reds, Will Aldrich of MLB.com reports.
As expected, the Pirates will bring up Ortiz for his MLB debut Tuesday. The move is not yet official, as the Pirates will need to clear a roster spot before promoting the young right-hander. Between stops at Indianapolis and Double-A Altoona this season, the 23-year-old has generated a 4.56 ERA, 1.14 WHIP and 138:38 K:BB across 124.1 innings.