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MLB · P · St. Louis Cardinals

Cooper Hjerpe

B/T L/L · 6' 3" · 200 lb · born Davis, CA, USA · age 25 · draft 2022 rd 1 · played P 17 · MLB debut 2026-09-06

134 batters faced scored this season His season card →

Scout’s note

Cooper Hjerpe, a 2022 first-rounder from Davis, CA, just reached the Cardinals in September and has 15 strikeouts in 4 games. That's the number — a left-hander getting swings and misses in his first taste, and nothing more to say yet.

Note written · FVR scout (GLM-5.2)

We wrote about Hjerpe here — The Buzz September 7, 2026

A second set of books

The same contract, read by MLB Spreadsheets (Ethan Hullihen), as of . We keep two sources on this because one source cannot check itself.

Tax AAV
$0.78M
Term
1 yr
His class
Pre-Arb

What the sheet prices each season at

Season2026202720282029203020312032
SalaryMinimumMinimumMinimumMinimumArb 1Arb 2Arb 3

A base salary under his own reading, and never subtracted from the cash figure above: a signing bonus lands in one and not the other, so the two disagree on most men without either being wrong. And the sheet does not mark which future seasons are GUARANTEED — a club option and a projected arbitration award are both just a number here, so read past the end of the deal as his forecast rather than as money owed.

The tax AAV above is his number under the CBA’s own rulebook, not the average we work out from Cot’s total. On a contract with deferred money the two come apart on purpose — and neither is subtracted from the other.

Collect Cooper Hjerpe

If the signal is right, the cardboard usually finds out later. Current listings:

Cooper Hjerpe cards on eBay →

High-end listings ($75+) →

Paid link — as an eBay Partner, FVR earns from qualifying purchases.

The Bureau on Cooper Hjerpe

The scouting press, in their own words

Cooper Hjerpe was awesome in a piggy back role today for his MLB Debut! Four perfect innings, six strikeouts. Such a unique angle for hitters, especially with that nasty sweeper. He has the goods to be an effective big league arm in various roles. https://t.co/9RsKPPflmy https://t.co/PNYOXmudHi

Aram Leighton · Just Baseball · September 6 · on X →

Cooper Hjerpe goes to his sweeper to pick up his first MLB strikeout 78.1 MPH 2485 RPM -1.4" IVB 11.1" HB https://t.co/5aQlVA0fGm

Kareem Haq · Card Prospects · September 6 · on X →

Cooper Hjerpe goes to his sweeper to pick up his first Triple-A strikeout https://t.co/c65gfoTkR7

Kareem Haq · Card Prospects · August 5 · on X →

Umpire favor

-0.2 net runs over 4 graded games — an even shake from the zone this season.

Biggest swings: -0.6 · +0.4

→ all umpire grades

The line

YearTeamLvlGIPW–LSVERASOWHIP
MLB CAREER412.11–004.38151.30

Bio & season lines: MLB StatsAPI · refreshed nightly · abbreviations →