Ryan Zeferjahn

RHP

Team: Chicago CubsThrows: RHeight: 6'5"Weight: 209 lbDOB: Feb 28, 1998Born: Topeka, KS, USAActive

Compare

Games

3.88

ERA

18.1%

K-BB%

97.5 mph

FB Velo

30.7%

CSW%

Stuff+

116

+16 vs MLB 100

vL 99vR 133▲

DLoc+

-8 vs MLB 100

vL 88▼vR 95▼

Stockyard PLoc+

-8 vs MLB 100

2026 Stockyard PLoc+ -> 2027

Pitching+

105

+5 vs MLB 100

vL 99vR 107▲

Synergy

109

Pitch Arsenal

Click a pitch to collapse or expand details

Sweeper

39.7%|Pitching+108▲

PLoc+

104-> 2027

Velocity

85.5mph

Spin

2686rpm

CSW%

36.3%

iVB / iHB

5.1" / -14.8"

Stuff+

DLoc+

Pitching+

vs L

108▲

104

vs R

127▲

109▲

112▲

Grade drivers

League-average Sweeper · 100 → 115.1

Break across arm slot

+9.8

Velocity

+5.7

Horizontal geometry

−2.8

Velo gap vs fastball

+1.8

Arm angle

+1.0

Vertical approach angle

+0.7

Everything else

−1.1

4-Seam Fastball

32.8%|Pitching+98

PLoc+

99-> 2027

Velocity

97.5mph

Spin

2278rpm

CSW%

30%

iVB / iHB

15.9" / 3.1"

Stuff+

DLoc+

Pitching+

vs L

107▲

52▼

vs R

122▲

57▼

100

Grade drivers

League-average 4-Seam Fastball · 100 → 115.6

Break across arm slot

+13.7

Velocity

+4.2

Carry along arm slot

−3.8

Vertical approach angle

+3.0

Seam-shifted wake: amount

+0.8

Horizontal geometry

+0.4

Everything else

−2.7

Sinker

15.6%|Pitching+99

PLoc+

111▲-> 2027

Velocity

96.4mph

Spin

2066rpm

CSW%

23.7%

iVB / iHB

8.6" / 13.9"

Stuff+

DLoc+

Pitching+

vs L

94▼

87▼

94▼

vs R

107▲

93▼

104

Grade drivers

League-average Sinker · 100 → 98.2

Velocity

+4.8

Horizontal geometry

−4.0

Seam-shifted wake: amount

+3.7

Break across arm slot

−1.9

Carry along arm slot

−1.8

Seam-shifted wake: direction

+1.7

Everything else

−4.3

Slider

11.2%|Pitching+106▲

PLoc+

97-> 2027

Velocity

88.1mph

Spin

2573rpm

CSW%

28.2%

iVB / iHB

-1.2" / -7.1"

Stuff+

DLoc+

Pitching+

vs L

109▲

106▲

vs R

110▲

109▲

105▲

Grade drivers

League-average Slider · 100 → 103.8

Velocity

+9.8

Horizontal geometry

−2.6

Velo gap vs fastball

+2.4

Break across arm slot

−1.7

Spin rate

+1.4

Extension

+1.3

Everything else

−6.8

Curveball

0.6%|Pitching+78▼

PLoc+

90▼-> 2027

Velocity

83.3mph

Spin

2628rpm

CSW%

iVB / iHB

-7.6" / -10.3"

Stuff+

DLoc+

Pitching+

vs L

91▼

26▼

84▼

vs R

-4▼

76▼

Grade drivers

League-average Curveball · 100 → 92.7

Horizontal geometry

−3.4

Velocity

+3.4

Carry along arm slot

−2.3

Release height

−1.8

Spin rate

+1.2

Extension

+1.1

Everything else

−5.5

Cutter

0.2%|Pitching+—

Velocity

89.4mph

Spin

2514rpm

CSW%

33.3%

iVB / iHB

3.1" / -4.9"

Stuff+

DLoc+

Pitching+

vs L

—

vs R

—

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

Ryan Zeferjahn

Pitch Arsenal

Sweeper

4-Seam Fastball

Sinker

Slider

Curveball

Cutter

Similar Pitchers

Game Log