Hjerpe will remain shut down for two more weeks while dealing with a left elbow injury, Daniel Guerrero of the St. Louis Post-Dispatch reports.
Hjerpe was placed on the 7-day injured list at Double-A Springfield on July 9 with an undisclosed injury.
Hjerpe has been promoted from Single-A Peoria to Double-A Springfield.
Hjerpe may not see much action against opposing teams' starting lineups during Grapefruit League play, Brenden Schaeffer of First Alert 4 reports.
Hjerpe (elbow) was activated from High-A Peoria's 7-day injured list Friday.
Hjerpe is recovering from surgery to remove a loose body in his left elbow and is questionable to return this season, Daniel Guerrero of the St. Louis Post-Dispatch reports.
Hjerpe (undisclosed) was placed on High-A Peoria's injured list Tuesday.
Hjerpe has a 7.50 ERA, 1.67 WHIP and 16:9 K:BB through his first three professional starts with High-A Peoria.