Aaron Bummer

LHP

Team: Omaha Storm ChasersThrows: LHeight: 6'3"Weight: 215 lbDOB: Sep 21, 1993Born: Valencia, CA, USAActive

Compare

Games

10.26

ERA

2.3%

K-BB%

90.3 mph

FB Velo

25.5%

CSW%

Stuff+

104

+4 vs lg 100

vL 112▲vR 97

DLoc+

-8 vs lg 100

vL 96vR 89▼

Stockyard PLoc+

-1 vs lg 100

2026 Stockyard PLoc+ -> 2027

Pitching+

-11 vs lg 100

vL 104vR 95▼

Deception

Synergy

—

Pitch Arsenal

Click a pitch to collapse or expand details

Sinker

38.7%|Pitching+99

Velocity

90.3mph

Spin

1998rpm

CSW%

29.1%

iVB / iHB

0.1" / 14.3"

Stuff+

DLoc+

Pitching+

vs L

114▲

104

106▲

vs R

89▼

93▼

Grade drivers

League-average Sinker · 100 → 104.4

Horizontal geometry

+7.7

Carry along arm slot

−6.3

Velocity

−4.6

Seam-shifted wake: amount

+3.5

Release height

+2.4

Seam-shifted wake: direction

+1.0

Everything else

+0.7

Curveball

22%|Pitching+105▲

Velocity

80.2mph

Spin

2299rpm

CSW%

23.6%

iVB / iHB

-7.3" / -12.3"

Stuff+

DLoc+

Pitching+

vs L

112▲

104

107▲

vs R

102

101

103

Grade drivers

League-average Curveball · 100 → 105.4

Horizontal geometry

+6.3

Arm angle

+2.1

Velo gap vs fastball

−1.4

Velocity

−0.9

Seam-shifted wake: amount

−0.7

Extension

+0.7

Everything else

−0.7

Sweeper

21%|Pitching+95▼

Velocity

80.6mph

Spin

2301rpm

CSW%

24.6%

iVB / iHB

0.1" / -13.5"

Stuff+

DLoc+

Pitching+

vs L

111▲

102

vs R

90▼

92▼

89▼

Grade drivers

League-average Sweeper · 100 → 103.2

Horizontal geometry

+8.6

Break across arm slot

−3.9

Velocity

−3.7

Vertical approach angle

+1.6

Spin rate

−1.1

Velo gap vs fastball

−1.0

Everything else

+2.7

Cutter

10.1%|Pitching+104

Velocity

87.7mph

Spin

2163rpm

CSW%

27.3%

iVB / iHB

8.3" / 1"

Stuff+

DLoc+

Pitching+

vs L

101

94▼

105▲

vs R

93▼

102

Grade drivers

League-average Cutter · 100 → 96.6

Velocity

−4.9

Seam-shifted wake: amount

+2.4

Break across arm slot

+2.2

Release height

−1.9

Vertical approach angle

−0.7

Seam-shifted wake: direction

−0.6

Everything else

+0.1

4-Seam Fastball

8.2%|Pitching+93▼

Velocity

90.6mph

Spin

2175rpm

CSW%

14.8%

iVB / iHB

10.8" / 8.7"

Stuff+

DLoc+

Pitching+

vs L

109▲

vs R

95▼

103

90▼

Grade drivers

League-average 4-Seam Fastball · 100 → 101.6

Break across arm slot

+5.3

Carry along arm slot

−4.8

Velocity

−4.2

Horizontal geometry

+3.2

Seam-shifted wake: amount

+2.6

Release height

−0.3

Everything else

−0.2

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

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Aaron Bummer

Pitch Arsenal

Sinker

Curveball

Sweeper

Cutter

4-Seam Fastball

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