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Ryan Zeferjahn
Ryan Zeferjahn
Chicago Cubs • Pitcher
Age 28 • 6' 5" • 209 lb
Bats: R • Throws: R
MLB Debut: 2024-08-25
Born: Topeka , KS • USA
Draft: 2019
2026 Stats
W
4
L
3
ERA
3.66
WHIP
1.20
IP
51.2
SO
75
SV
4
HLD
9
G
45
GS
0
Career Stats
W
10
L
9
ERA
4.01
WHIP
1.29
IP
143.2
SO
185
SV
9
HLD
31
G
139
GS
1
Year-by-Year Pitching
Year Team GGSIP WLSVSO ERAWHIPAwards
2024 LAA 12 — 17.0 — — — 18 2.12 0.76
2025 LAA 62 1 57.0 6 5 2 73 4.74 1.47
2026 Total 65 — 69.2 4 4 7 94 3.88 1.28
Spring Training
Pitching
YearTeamGGSIPWLSVSOERAWHIP
2023 BOS 1—1.0 1——1 0.000.00
2024 BOS 4—3.0 ———4 18.003.67
2025 LAA 8—9.0 ———8 0.001.11
2026 LAA 8—10.1 ——18 5.231.26
Postseason
Pitching
YearTeamGGSIPWLSVSOERAWHIP
2026 CHC 1—1.1 ———2 0.001.50
Game Logs
Season selector loads one year at a time.
Pitching
Date Opponent IP H R ER BB SO HR
2026-09-24 vs MIA 1.0 0 0 0 0 0 0
2026-09-22 vs MIA 0.2 1 0 0 1 1 0
2026-09-19 @ CIN 1.0 1 0 0 0 2 0
2026-09-16 vs ATL 1.0 1 0 0 0 1 0
2026-09-14 vs ATL 1.0 2 0 0 1 1 0
2026-09-12 vs PIT 0.1 0 0 0 0 1 0
2026-09-07 @ MIL 0.1 1 1 1 1 1 0
2026-09-05 @ MIA 1.2 0 0 0 1 1 0
2026-09-03 vs MIL 1.0 0 0 0 0 1 0
2026-09-01 vs MIL 0.2 2 2 2 0 1 0
2026-08-29 vs CIN 1.1 0 0 0 0 2 0
2026-08-26 @ AZ 1.0 2 1 1 0 0 0
2026-08-24 @ AZ 1.0 0 0 0 0 0 0
2026-08-21 @ SEA 0.2 1 1 0 1 0 0
2026-08-17 vs CWS 1.0 2 2 2 1 1 1
2026-08-14 vs STL 1.0 1 0 0 1 2 0
2026-08-11 @ WSH 0.2 3 2 2 1 0 0
2026-08-09 @ KC 1.0 1 0 0 0 2 0
2026-08-05 vs LAD 0.2 1 1 1 0 2 1
2026-08-04 vs LAD 1.0 0 0 0 0 0 0
2026-08-02 vs MIL 1.2 2 0 0 0 4 0
2026-07-27 vs HOU 1.0 2 1 1 0 2 0
2026-07-26 @ SF 1.0 1 0 0 0 2 0
2026-07-24 @ SF 1.0 0 0 0 1 1 0
2026-07-21 vs STL 1.0 1 0 0 0 3 0
2026-07-19 vs DET 1.0 1 1 1 0 0 1
2026-07-17 vs DET 1.0 0 0 0 0 2 0
2026-07-12 @ MIN 1.1 1 1 1 0 2 1
2026-07-09 @ TEX 1.0 0 0 0 0 1 0
2026-07-08 @ TEX 1.0 1 0 0 0 2 0
2026-07-04 vs BOS 1.1 0 0 0 1 2 0
2026-06-30 @ SEA 1.0 1 0 0 0 1 0
2026-06-28 vs ATH 0.2 0 0 0 2 2 0
2026-06-27 vs ATH 1.0 0 0 0 0 2 0
2026-06-23 vs BAL 1.0 0 0 0 0 3 0
2026-06-20 @ ATH 1.2 0 0 0 1 3 0
2026-06-18 @ ATH 1.0 0 0 0 2 1 0
2026-06-14 vs TB 1.0 0 0 0 0 1 0
2026-06-12 vs TB 0.1 0 0 0 1 1 0
2026-06-10 vs HOU 1.0 0 0 0 1 2 0
2026-06-08 vs HOU 1.0 0 0 0 2 3 0
2026-06-06 @ LAD 2.0 0 0 0 2 3 0
2026-06-03 vs COL 1.0 2 1 1 0 0 0
2026-06-01 vs COL 1.0 0 0 0 1 1 0
2026-05-29 @ TB 0.1 3 4 4 1 0 2
2026-05-28 @ DET 1.0 0 0 0 2 1 0
2026-05-23 vs TEX 1.0 1 1 1 0 1 1
2026-05-21 vs ATH 1.0 0 1 0 2 0 0
2026-05-20 vs ATH 0.1 0 1 1 0 0 0
2026-05-18 vs ATH 0.1 2 1 1 2 0 0
2026-05-13 @ CLE 1.0 1 0 0 0 2 0
2026-05-10 @ TOR 1.0 0 0 0 0 2 0
2026-05-05 vs CWS 1.1 0 0 0 2 3 0
2026-05-02 vs NYM 2.0 0 0 0 1 1 0
2026-04-29 @ CWS 2.0 1 1 1 0 4 0
2026-04-26 @ KC 1.2 0 0 0 1 1 0
2026-04-24 @ KC 1.0 0 0 0 0 2 0
2026-04-22 vs TOR 1.1 1 2 2 1 1 0
2026-04-18 vs SD 1.0 3 2 2 2 0 0
2026-04-14 @ NYY 1.0 1 0 0 0 2 0
2026-04-11 @ CIN 2.0 2 1 1 0 1 0
2026-04-08 vs ATL 1.2 2 2 2 2 2 0
2026-04-05 vs SEA 2.0 0 2 2 1 5 0
2026-04-01 @ CHC 0.2 1 1 0 1 1 0
2026-03-27 @ HOU 2.0 0 0 0 0 2 0
Transactions
Entire history • newest first.
2026-08-04
Chicago Cubs activated RHP Ryan Zeferjahn.
2026-08-03
RHP Ryan Zeferjahn roster status changed by Chicago Cubs.
2026-08-03
Los Angeles Angels traded RHP Ryan Zeferjahn to Chicago Cubs for C Moisés Ballesteros and RHP Mason McGwire.
2026-04-16
RHP Ryan Zeferjahn changed number to 56.
2026-04-15
RHP Ryan Zeferjahn changed number to 42.
2025-09-23
Los Angeles Angels activated RHP Ryan Zeferjahn from the 15-day injured list.
2025-09-06
Los Angeles Angels placed RHP Ryan Zeferjahn on the 15-day injured list. Right knee tendinitis.
2025-04-16
RHP Ryan Zeferjahn changed number to 56.
2025-04-15
RHP Ryan Zeferjahn changed number to 42.
2024-08-23
Los Angeles Angels selected the contract of RHP Ryan Zeferjahn from Salt Lake Bees.
2024-07-30
Los Angeles Angels traded RHP Luis García to Boston Red Sox for SS Matthew Lugo, 1B Niko Kavadas, RHP Ryan Zeferjahn and RHP Yeferson Vargas.
2024-02-24
RHP Ryan Zeferjahn assigned to Boston Red Sox.
2024-02-24
RHP Ryan Zeferjahn roster status changed by Boston Red Sox.
2023-02-25
RHP Ryan Zeferjahn assigned to Boston Red Sox.
2023-02-25
RHP Ryan Zeferjahn roster status changed by Boston Red Sox.
2019-06-12
Boston Red Sox signed RHP Ryan Zeferjahn.
Scouting Report
Statcast-style percentiles • Basenerd theme
Season 2026
Ready
Basic Line
Season / Game
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Pitch Arsenal
Usage • Velo • Break • Spin • xwOBA
Pitch N Use% Velo HB IVB Spin xwOBA Whiff% Zone% Chase% BNStuff+ BNCtrl+
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Notes
Primary pitch summary
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Movement Profile (Induced Break)
Pitcher's View: HB vs Rise / Drop (in)
Circles: 12/18/24 in • Dots = pitch types (size ~ pitch count)
Pitch Location Heatmaps
KDE-style blur • fixed zone • catcher POV
vs. LHH
vs. RHH
Zone: left -0.7083 / right 0.7083 • bot 1.595 / top 3.394 • Domain: X [-2,2], Z [0,5]
Statcast Game Log
Per-game pitch metrics from Statcast
Date Pitches Velo BNStuff+ BNCtrl+ Whiff% Zone% Chase% K% BB% xwOBA
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