Cooper Hjerpe

LHP

Team: St. Louis CardinalsThrows: LHeight: 6'3"Weight: 200 lbDOB: Mar 16, 2001Born: Davis, CA, USAActive

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Games

4.38

ERA

10.7%

K-BB%

90.3 mph

FB Velo

28.6%

CSW%

Stuff+

-2 vs MLB 100

vL 109▲vR 87▼

DLoc+

-22 vs MLB 100

vL 80▼vR 77▼

Stockyard PLoc+

103

+3 vs MLB 100

2026 Stockyard PLoc+ -> 2027

Pitching+

-30 vs MLB 100

vL 95▼vR 90▼

Synergy

—

Pitch Arsenal

Click a pitch to collapse or expand details

4-Seam Fastball

52.2%|Pitching+99

PLoc+

109▲-> 2027

Velocity

90.3mph

Spin

2042rpm

CSW%

30.8%

iVB / iHB

8.4" / 12.5"

Stuff+

DLoc+

Pitching+

vs L

110▲

101

vs R

91▼

92▼

Grade drivers

League-average 4-Seam Fastball · 100 → 99.9

Velocity

−5.3

Carry along arm slot

−5.3

Vertical approach angle

+5.3

Release height

+2.3

Break across arm slot

+2.3

Seam-shifted wake: amount

+2.2

Everything else

−1.6

Sweeper

22.7%|Pitching+82▼

PLoc+

108▲-> 2027

Velocity

77.5mph

Spin

2444rpm

CSW%

29.3%

iVB / iHB

2.5" / -15.3"

Stuff+

DLoc+

Pitching+

vs L

106▲

67▼

vs R

83▼

64▼

70▼

Grade drivers

League-average Sweeper · 100 → 94.1

Horizontal geometry

+7.4

Break across arm slot

−6.6

Velocity

−5.9

Release height

−2.5

Extension

+1.8

Seam-shifted wake: amount

−1.6

Everything else

+1.5

Changeup

15.7%|Pitching+92▼

PLoc+

96-> 2027

Velocity

81mph

Spin

2226rpm

CSW%

22.5%

iVB / iHB

-3.5" / 15.8"

Stuff+

DLoc+

Pitching+

vs L

104

87▼

93▼

vs R

93▼

80▼

91▼

Grade drivers

League-average Changeup · 100 → 99.0

Horizontal geometry

+7.1

Extension

+6.2

Vertical approach angle

−4.7

Break across arm slot

−2.4

Seam-shifted wake: amount

−2.2

Velo gap vs fastball

+1.8

Everything else

−6.8

Cutter

9.4%|Pitching+94▼

PLoc+

98-> 2027

Velocity

86.2mph

Spin

1997rpm

CSW%

25%

iVB / iHB

7.7" / 0.4"

Stuff+

DLoc+

Pitching+

vs L

72▼

92▼

vs R

94▼

Grade drivers

League-average Cutter · 100 → 95.2

Carry along arm slot

−11.2

Seam-shifted wake: amount

+6.2

Velocity

−5.8

Vertical approach angle

+4.9

Release height

+2.5

Extension

+2.5

Everything else

−3.9

xRV (Expected Run Value): Expected runs per 100 pitches using xwOBA on batted balls (BABIP-neutral). Negative = good (runs prevented), Positive = bad (runs allowed).

Similar Pitchers

Last 30 games in 2026

Cooper Hjerpe

Pitch Arsenal

4-Seam Fastball

Sweeper

Changeup

Cutter

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Game Log