Search Pitcher

Chapman, Aroldis

LHP

Team: Boston Red SoxThrows: LHeight: 6'4"Weight: 235 lbDOB: Feb 28, 1988Born: Holguin, CubaActive

Games

1.95

ERA

21.4%

K-BB%

98 mph

FB Velo

28.3%

CSW%

Stuff+

114

+14 vs lg 100

vL 120▲vR 108▲

DLoc+

-4 vs lg 100

vL 98vR 95▼

Stockyard PLoc+

—

MLB season projection

Projects next-year DLoc+

Pitching+

115

+15 vs lg 100

vL 115▲vR 114▲

Deception

—

2024+ only

Synergy

—

Min. 40 IP

Mix+

—

Min. 40 IP

Match+

—

Min. 40 IP

Pitch Arsenal

Click a pitch to collapse or expand details

4-Seam Fastball

37%|P+100

Velocity

96.9mph

Spin

2428rpm

CSW%

23.8%

iVB / iHB

17.8" / 2.2"

Stuff+

DLoc+

Pitching+

vs L

105▲

100

vs R

106▲

Grade drivers

League-average 4-Seam Fastball · 100 → 106.4

Carry along arm slot

+5.0

Break across arm slot

−4.1

Velocity

+4.0

Release height

+1.9

Extension

+1.7

Horizontal geometry

−1.4

Everything else

−0.7

Sinker

32.7%|P+112▲

Velocity

98mph

Spin

2455rpm

CSW%

28%

iVB / iHB

16.1" / 10.8"

Stuff+

DLoc+

Pitching+

vs L

124▲

110▲

vs R

117▲

95▼

113▲

Grade drivers

League-average Sinker · 100 → 130.2

Velocity

+7.8

Carry along arm slot

+7.1

Break across arm slot

+6.9

Extension

+3.0

Seam-shifted wake: amount

+2.3

Release height

+1.3

Everything else

+1.8

Slider

18.2%|P+113▲

Velocity

85.9mph

Spin

2325rpm

CSW%

39.1%

iVB / iHB

5.1" / -10.5"

Stuff+

DLoc+

Pitching+

vs L

124▲

100

113▲

vs R

105▲

100

112▲

Grade drivers

League-average Slider · 100 → 114.2

Horizontal geometry

+5.0

Break across arm slot

+3.5

Extension

+2.4

Velo gap vs fastball

+2.4

Seam-shifted wake: amount

+1.6

Carry along arm slot

−1.0

Everything else

+0.3

Split-Finger

12.1%|P+112▲

Velocity

90.1mph

Spin

1240rpm

CSW%

27%

iVB / iHB

3.2" / 5.6"

Stuff+

DLoc+

Pitching+

vs L

132▲

103

112▲

vs R

120▲

103

110▲

Grade drivers

League-average Split-Finger · 100 → 131.8

Extension

+10.3

Horizontal geometry

+9.4

Vertical break gap vs fastball

+6.1

Velocity

+4.4

Break across arm slot

+3.0

Velo gap vs fastball

−1.4

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

Game Log

Last 30 games in 2026

Search Pitcher

Chapman, Aroldis

LHP

Team: Boston Red SoxThrows: LHeight: 6'4"Weight: 235 lbDOB: Feb 28, 1988Born: Holguin, CubaActive

Games

1.95

ERA

21.4%

K-BB%

98 mph

FB Velo

28.3%

CSW%

Stuff+

114

+14 vs lg 100

vL 120▲vR 108▲

DLoc+

-4 vs lg 100

vL 98vR 95▼

Stockyard PLoc+

—

MLB season projection

Projects next-year DLoc+

Pitching+

115

+15 vs lg 100

vL 115▲vR 114▲

Deception

—

2024+ only

Synergy

—

Min. 40 IP

Mix+

—

Min. 40 IP

Match+

—

Min. 40 IP

Pitch Arsenal

Click a pitch to collapse or expand details

4-Seam Fastball

37%|P+100

Velocity

96.9mph

Spin

2428rpm

CSW%

23.8%

iVB / iHB

17.8" / 2.2"

Stuff+

DLoc+

Pitching+

vs L

105▲

100

vs R

106▲

Grade drivers

League-average 4-Seam Fastball · 100 → 106.4

Carry along arm slot

+5.0

Break across arm slot

−4.1

Velocity

+4.0

Release height

+1.9

Extension

+1.7

Horizontal geometry

−1.4

Everything else

−0.7

Sinker

32.7%|P+112▲

Velocity

98mph

Spin

2455rpm

CSW%

28%

iVB / iHB

16.1" / 10.8"

Stuff+

DLoc+

Pitching+

vs L

124▲

110▲

vs R

117▲

95▼

113▲

Grade drivers

League-average Sinker · 100 → 130.2

Velocity

+7.8

Carry along arm slot

+7.1

Break across arm slot

+6.9

Extension

+3.0

Seam-shifted wake: amount

+2.3

Release height

+1.3

Everything else

+1.8

Slider

18.2%|P+113▲

Velocity

85.9mph

Spin

2325rpm

CSW%

39.1%

iVB / iHB

5.1" / -10.5"

Stuff+

DLoc+

Pitching+

vs L

124▲

100

113▲

vs R

105▲

100

112▲

Grade drivers

League-average Slider · 100 → 114.2

Horizontal geometry

+5.0

Break across arm slot

+3.5

Extension

+2.4

Velo gap vs fastball

+2.4

Seam-shifted wake: amount

+1.6

Carry along arm slot

−1.0

Everything else

+0.3

Split-Finger

12.1%|P+112▲

Velocity

90.1mph

Spin

1240rpm

CSW%

27%

iVB / iHB

3.2" / 5.6"

Stuff+

DLoc+

Pitching+

vs L

132▲

103

112▲

vs R

120▲

103

110▲

Grade drivers

League-average Split-Finger · 100 → 131.8

Extension

+10.3

Horizontal geometry

+9.4

Vertical break gap vs fastball

+6.1

Velocity

+4.4

Break across arm slot

+3.0

Velo gap vs fastball

−1.4

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

Game Log

Last 30 games in 2026