RYAN ZEFERJAHN
#56 - P
Status On roster
Ht/Wt 6’5’’, 209 lbs
Bats/Throws R / R
Experience 0 years ‘-’
Debut Aug 25, 2024
Born Feb 28, 1998 (28 yrs) Topeka, Kansas
Hometown Topeka, Kansas
Drafted Drafted by Boston in 2019 (3/107).
Drafted from Kansas (KS)
Acquired Acquired in a trade with Boston in 2024.
VS.
Ryan Zeferjahn
Leader
STAT RANK
1 3
Wins Jose Soriano, Aaron Ashby, Michael Soroka, Steven Matz
37 1
11 28
Strikeouts Jacob Misiorowski
111 1
8.1 28.0
Innings pitched Max Fried
171 1
5 9
Games Justin Topa, Brent Headrick, Kody Funderburk, Isaac Mattson, Gregory Soto
149 1
5 9
Games Brent Headrick, Kody Funderburk, Justin Topa
74 1
8.1 28.0
Innings pitched Max Fried
79 1
1 3
Wins Jose Soriano, Steven Matz
22 1
11 26
Strikeouts Dylan Cease
60 1
Season Stats
Pitcher
W
Wins
L
Losses
ERA
Earned Run Average
G
Games
GS
Games Started
CG
Complete Games
SHO
Shutouts
SV
Saves
HLD
Holds
IP
Innings Pitched
H
Hits Allowed
R
Runs Allowed
ER
Earned Runs
HR
Home Runs Allowed
BB
Walks
SO
Strikeouts
WHIP
Walks and Hits Per Inning Pitched
YTD 1 0 5.40 5 0 0 0 0 0 8.1 5 6 5 0 4 11 1.08
Game Log
Pitcher
Date Team Opp GS
Games Started
Dec CG
Complete Games
SHO
Shutouts
IP
Innings Pitched
H
stats.by_season.headers.baseball.pitching.regular-season.tooltipss.h
R
stats.by_season.headers.baseball.pitching.regular-season.tooltipss.r
ER
Earned Runs
HR
Home Runs Allowed
BB
Walks
K YTD W YTD L YTD SV YTD ERA YTD WHIP Status
2026-04-11 0 - 0 0 2.0 2 1 1 0 0 1 1 0 0 5.4 1.08 -
2026-04-10 - - - - - - - - - - - 1 0 0 5.68 - DNP
2026-04-08 0 - 0 0 1.2 2 2 2 0 2 2 1 0 0 5.68 1.11 -
2026-04-07 - - - - - - - - - - - 1 0 0 3.86 - DNP
2026-04-06 - - - - - - - - - - - 1 0 0 3.86 - DNP
Transactions & Injuries
Date Description
2025-09-22 Missed 15 games (Knee tendinitis - right).
2025-09-06 Knee tendinitis - right, 15-Day IL.
2025-04-07 Returned from injury (Hamstring injury).
2025-04-05 Hamstring injury, day-to-day.
2024-08-23 Contract purchased from Salt Lake (AAA).