Mason Montgomery

LHP

Team: Pittsburgh PiratesThrows: LHeight: 6'2"Weight: 205 lbDOB: Jun 17, 2000Born: Austin, TX, USAActive

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Games

2.88

ERA

28.4%

K-BB%

98.7 mph

FB Velo

32.5%

CSW%

Stuff+

115

+15 vs MLB 100

vL 115▲vR 116▲

DLoc+

102

+2 vs MLB 100

vL 104vR 99

Stockyard PLoc+

100

0 vs MLB 100

2026 Stockyard PLoc+ -> 2027

Pitching+

119

+19 vs MLB 100

vL 111▲vR 109▲

Synergy

Pitch Arsenal

Click a pitch to collapse or expand details

4-Seam Fastball

46.4%|Pitching+114▲

PLoc+

99-> 2027

Velocity

98.5mph

Spin

2225rpm

CSW%

31.9%

iVB / iHB

17.9" / 4.4"

Stuff+

DLoc+

Pitching+

vs L

112▲

91▼

112▲

vs R

116▲

87▼

114▲

Grade drivers

League-average 4-Seam Fastball · 100 → 114.8

Carry along arm slot

+7.4

Vertical approach angle

+4.9

Velocity

+4.8

Seam-shifted wake: amount

−1.4

Break across arm slot

+1.4

Extension

+1.0

Everything else

−3.3

Sinker

24.5%|Pitching+115▲

PLoc+

90▼-> 2027

Velocity

98.7mph

Spin

2219rpm

CSW%

38.8%

iVB / iHB

14.6" / 11.5"

Stuff+

DLoc+

Pitching+

vs L

113▲

119▲

vs R

107▲

89▼

109▲

Grade drivers

League-average Sinker · 100 → 118.9

Carry along arm slot

+12.4

Velocity

+7.1

Vertical approach angle

+5.8

Break across arm slot

−1.5

Extension

+1.4

Release height

−0.8

Everything else

−5.5

Curveball

13.8%|Pitching+107▲

PLoc+

95▼-> 2027

Velocity

86.5mph

Spin

2682rpm

CSW%

28.6%

iVB / iHB

-6.3" / -2"

Stuff+

DLoc+

Pitching+

vs L

122▲

104

107▲

vs R

111▲

106▲

Grade drivers

League-average Curveball · 100 → 118.8

Velocity

+15.0

Horizontal geometry

+6.9

Release height

−2.5

Spin rate

+1.6

Extension

+1.6

Vertical approach angle

+1.5

Everything else

−5.3

Slider

13.7%|Pitching+103

PLoc+

98-> 2027

Velocity

89.7mph

Spin

2644rpm

CSW%

30%

iVB / iHB

1.4" / -1.6"

Stuff+

DLoc+

Pitching+

vs L

106▲

100

102

vs R

111▲

102

Grade drivers

League-average Slider · 100 → 110.2

Velocity

+12.4

Horizontal geometry

+3.4

Velo gap vs fastball

+3.0

Release height

−2.6

Spin rate

+2.0

Extension

+1.7

Everything else

−9.7

Changeup

1.7%|Pitching+102

PLoc+

84▼-> 2027

Velocity

90.1mph

Spin

1589rpm

CSW%

20%

iVB / iHB

11" / 8.7"

Stuff+

DLoc+

Pitching+

vs L

105▲

90▼

104

vs R

95▼

101

Grade drivers

League-average Changeup · 100 → 100.8

Vertical approach angle

−10.5

Extension

+7.5

Horizontal geometry

+5.2

Velocity

+3.1

Break across arm slot

−2.1

Velo gap vs fastball

+1.5

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).

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Last 30 games in 2026

Mason Montgomery

Pitch Arsenal

4-Seam Fastball

Sinker

Curveball

Slider

Changeup

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