Cooper Hjerpe

St. Louis Cardinals

SP · #56 · Bats L · Throws L · 6'3" · 200 lb · Age 25 · 1 yr in MLB

2026 grade

41.0

Runs prevented: +1.1
IP · ERA: 12.1 · 4.38
K · BB: 15 · 9
Rank: Not qualified

What the grade is made of

Runs each part saves or costs against an average pitcher facing the same batters. Contact counts a quarter for how it turned out, because over a season that's mostly the fielders and luck.

Home runs allowed0 vs 2 avg+2.3
Walks9 vs 5 avg−1.4
Hit batters2 vs 1 avg−0.5
Strikeouts14 vs 12 avg+0.5
Parks pitched in+0.2
Contact allowed (how it turned out counts a quarter)30 vs 36 avg−0.1

2026 game log: pitching

Game grades need 3 batters faced; starts are ranked against starts, relief outings against relief outings.

Game	Result	Dec	IP	H	R	ER	BB	K	PC	Grade
Thu, Sep 24@PIT	L 1-2		3.1	3	0	0	3	3	74	52.0
Fri, Sep 18vsWSH	L 1-9		4.0	2	2	2	2	3	74	91.0
Sat, Sep 12vsCHW	L 5-6		1.0	2	4	4	4	3	52	1.1
Sun, Sep 6@COL	W 10-8	W	4.0	0	0	0	0	6	54	99.9

Scores, box scores and play-by-play from ESPN. The run values and park factors behind the grades were worked out from Retrosheet's play-by-play: the information used here was obtained free of charge from and is copyrighted by Retrosheet. Interested parties may contact Retrosheet at www.retrosheet.org.