Cooper Hjerpe Bowman Card Prices & Value
Track Bowman 1st Chrome autograph and rookie card values for this 25-year-old STL LHP: raw and PSA 10 graded price trends, recent sales, and market data. Current season: ERA 4.38, WHIP 1.30.
Market data
Price history, recent sales, active listings and parallel pricing for Cooper Hjerpe are part of Premium. Already a member? Sign in.
Stats
| Year | Level | ERA | WHIP | K | IP | W-L | GP | SV | BB |
|---|---|---|---|---|---|---|---|---|---|
| 2026 | A | 7.71 | 1.07 | 4 | 4.2 | 0-0 | 3 | 0 | 2 |
| 2026 | AA | 5.02 | 1.40 | 25 | 14.1 | 0-1 | 5 | 0 | 12 |
| 2026 | AAA | 0.95 | 1.42 | 27 | 19.0 | 0-0 | 5 | 0 | 17 |
| 2026 | MLB | 4.38 | 1.30 | 15 | 12.1 | 1-0 | 4 | 0 | 9 |
| 2026 | ROK | 0.00 | 0.25 | 5 | 4.0 | 0-0 | 2 | 0 | 1 |
| 2024 | A+ | 3.35 | 1.19 | 56 | 37.2 | 0-3 | 11 | 0 | 20 |
| 2024 | AA | 3.07 | 0.95 | 20 | 14.2 | 2-1 | 4 | 0 | 8 |
| 2023 | A+ | 3.51 | 1.24 | 51 | 41.0 | 2-3 | 10 | 0 | 25 |
Cooper Hjerpe: Common Questions
Does Cooper Hjerpe have a 1st Bowman autograph, and which set is it in?
Yes. Cooper Hjerpe's first Bowman autograph is in 2022 Bowman Draft, card CDA-CHE. Until an MLB debut, that 1st auto is the closest thing to a Cooper Hjerpe rookie card.
What are Cooper Hjerpe's position, team, and age?
Cooper Hjerpe is a LHP in the STL organization, currently 25 years old. This season's line: ERA 4.38, WHIP 1.30.
How is Cooper Hjerpe ranked among MLB prospects?
Cooper Hjerpe is not currently inside our ranked prospect list.
How often does Cooper Hjerpe's Bowman auto grade a PSA 10?
Across graded copies, Cooper Hjerpe's base Bowman autograph hits a PSA 10 roughly 76% of the time (17 graded so far).
What is Cooper Hjerpe's 1st Bowman auto worth, and where can I track the price?
Raw and PSA 10 sale prices, price history, and the HobbyMonitor value score for Cooper Hjerpe update daily on this page for HobbyMonitor members.