Show classic player card
Jesse Orosco League
7-11-2215
Mark Kerr Relief Pitcher
Retired (2026, Age 35)
CAREER BIOGRAPHICAL DATA
ERA 4.29 Total Rating B    Bats/Throws R/R
W-L 26-20 Status Deceased (2064) Option Years 0  
SV 8 Age at Death 73 Date of Birth 07-03-1991
K 426 Drafted Round 1, Pick 7
(2013)		 Majors Svc Time 8 years
(7 games)
IP 591.0
WHIP 1.41
OFFENSE PITCHING MENTORING
Contact vs. R D- Contact vs. L D- Endurance C-   Ldrship B 
Power vs. R D- Power vs. L D- Velocity C+   Mentor Val A-
Speed B- Bunt C- Control A-
POSITIONS DEFENSE/HEALTH POSTSEASON
 C * --- SS --- Range C- WS Rings 0
1B --- LF --- Arm B  WS Appearances 0
2B --- CF ---   Health C+ LCS Appearances 0
3B --- RF ---   Injured Days 0 All Star Teams 0
* League requires 75% rating to start at catcher.

 Skill grades calculated using approximate current ratings minus past improvements.
Year OS Age  Endurance   Velocity   Control 
201322C-C B 
201423C-C B 
201524C-C B 
201625C-C+B+
201726C-C+B+
201827C-C+A-
201928C-C+A-
202029C-B-A-
202130C B-A-
202231C B-A-
202332C B-A-
202433C B-A 
202534C B-A 
202635C-B-A-
Career Transactions
DateTransaction
2026-11-01Mark Kerr has retired from the Boston Commons
2025-09-04Mark Kerr of the Boston Commons is injured and is expected to be out 40 days.
2019-04-11The Boston Commons have promoted Mark Kerr to the major league team. The Boston Commons have designated J.R. Atz for assignment.
2018-06-28The Boston Commons have sent Mark Kerr to the minors.
2018-05-21The Boston Commons have promoted Mark Kerr to the major league team. The Boston Commons have sent Carlos Moreno to the minors.
2012-10-23Trade #1126650 has been completed between the Texas Rangers and the Boston Commons. The Boston Commons receive Bob Boehler, Draft Pick 2015 Round 2 TEX (Ed Lanier), Draft Pick 2013 Round 1 TEX (Mark Kerr) from the Texas Rangers in exchange for Draft Pick 2015 Round 1 BOS (Hal Birmingham). Protest This Trade.