Cooper Hjerpe

Cooper Hjerpe

24-Year-Old PitcherP
St. Louis Cardinals AA
7-Day IL
Injury Undisclosed
Est. Return 4/15/2025
2025 Fantasy Outlook
Coming back from a 2023 season shortened by arthroscopic left elbow surgery, Hjerpe was babied by the Cardinals for the first few months of the season at High-A Peoria, never exceeding four innings or 67 pitches in any of his 11 starts. They loosened the reins a bit upon a midseason promotion to Double-A Springfield, but unfortunately Hjerpe went down with more elbow trouble in early July which ended his campaign. When healthy, Hjerpe's performance was mostly encouraging, as he fanned 76 in 52.1 innings while collecting a 3.27 ERA. He also walked 28 batters, and avoiding free passes has been a consistent concern since he entered pro ball. Hjerpe, who works from a super low arm slot from the left side, needs to stay on the bump and find the strike zone in 2025. If he does that, he could be part of the Cardinals' rotation before the end of the season. Read Past Outlooks
$Signed a $3.18 million contract with the Cardinals in July of 2022.
Out with undisclosed injury
PSt. Louis Cardinals  AA
Undisclosed
April 4, 2025
Double-A Springfield recently placed Hjerpe on the injured list with an undisclosed injury, Sam Dykstra of MLB Pipeline reports.
ANALYSIS
He's missed a lot of time with elbow injuries since being selected in the first round of the 2022 First-Year Player Draft. Hjerpe's inability to handle a starter's workload thus far points to a future in relief. He had a 3.27 ERA, 1.13 WHIP and 76:28 K:BB in 52.1 innings (15 starts) at Double-A last year.
Read More News
Pitching Stats
Loading Pitching Stats...
Minor League Game Log
calculator icon
Calculate Stats Over Time
Just click on any two dates.
Loading Minor League Pitching Game Log...
Prospect Rankings History
Advanced Pitching Stats
Loading Advanced Pitching Stats...
Defensive Stats
Loading MLB Defensive Stats...
Stats Vs Today's Lineup
Want more matchup stats?
Loading Matchup Stats...
Our full team depth charts are reserved for RotoWire subscribers.
Subscribe Now
Recent RotoWire Articles Featuring Cooper Hjerpe See More
Farm Futures: Noteworthy MiLB Assignments
5 days ago
James Anderson analyzes the most noteworthy level assignments for the game's top prospects, including A's slugger Nick Kurtz, who got pushed to Triple-A Las Vegas.
Mound Musings: The “Kids on Parade” Watch List For 2025
199 days ago
Brad Johnson concludes this season's Mound Musings with his annual Kids on Parade list, with Christian Scott closing out the list for the Mets.
Past Fantasy Outlooks
2024
2023
Hjerpe, a 6-foot-3 southpaw, put up very impressive numbers in college thanks to a unique arm angle that allows all his pitches to play up. He got off to a slow start in his pro debut, but he had a 1.54 ERA, 0.90 WHIP and 26 strikeouts in 23.1 innings over his final four starts before needing a cleanup procedure on his elbow. He made it back for the Arizona Fall League, and worked as a reliever there, striking out 15 while walking six in 8.1 innings over seven appearances. Including the AFL, Hjerpe was able to log just 49.1 innings after throwing 103.1 frames for Oregon State in 2022. Staying healthy and handling a starter's workload will be paramount this year, and if he does that, he could be an option in the big-league rotation in late 2024 or in 2025.
The data darling of the 2022 MLB Draft on the pitching side, Hjerpe's fastball sits in the low-90s, touching 95 mph, but the extreme vertical approach angle from his sidearm delivery allows his fastball to play up as a plus pitch. The 6-foot-3, 200-pound southpaw from Oregon State registered a 2.53 ERA, 0.87 WHIP and 161:23 K:BB in 103.1 innings as a junior. The Cardinals grabbed him with the 22nd overall pick and gave him full slot money. Most pitchers gain a tick or two of velocity in pro ball, so Hjerpe's fastball should remain a dominant weapon thanks partially to his excellent command. As with most starters with a low arm slot, the big question is how his secondaries will develop. He throws a couple breaking balls and a changeup, but none of them are thrown harder than around 80 mph. Even so, his sweeping slider performed like a plus pitch in college. Hjerpe did not pitch after getting drafted, but he could be one of the best pitchers from this class and could move quickly.
More Fantasy News
Clean bill of health this spring
PSt. Louis Cardinals  AA
February 27, 2025
Hjerpe (elbow) allowed one run over an inning of work in his Grapefruit League debut Tuesday versus the Blue Jays.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Shut down two more weeks
PSt. Louis Cardinals  AA
Elbow
July 29, 2024
Cardinals president of baseball operations John Mozeliak said Monday that 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.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Sidelined at Double-A
PSt. Louis Cardinals  AA
Undisclosed
July 22, 2024
Double-A Springfield placed Hjerpe on its 7-day injured list July 9 with an undisclosed injury.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Moving up to Double-A
PSt. Louis Cardinals  AA
June 11, 2024
The Cardinals promoted Hjerpe from High-A Peoria to Double-A Springfield on Tuesday.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Enjoying first big-league camp
PSt. Louis Cardinals  AA
March 4, 2024
Hjerpe may not see much action against opposing teams' starting lineups during Grapefruit League play, Brenden Schaeffer of First Alert 4 reports.
ANALYSIS
Subscribe now to instantly reveal our take on this news.