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Jesse Orosco League
7-7-2215
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.

Year Vs G IP SO BB H WHIP
2018 LHB 17 16.0 5 5 13 1.13
2018 RHB 16 7.2 4 4 9 1.70
2019 LHB 59 57.2 47 17 55 1.25
2019 RHB 47 34.0 23 9 32 1.21
2020 LHB 37 28.0 22 8 30 1.36
2020 RHB 36 24.1 22 11 25 1.48
2021 LHB 43 34.0 22 11 40 1.50
2021 RHB 41 27.1 17 6 28 1.24
2022 LHB 51 39.2 35 17 47 1.61
2022 RHB 47 33.0 23 13 29 1.27
2023 LHB 51 31.1 34 11 34 1.44
2023 RHB 41 27.2 22 9 21 1.08
2024 LHB 49 33.2 23 18 35 1.57
2024 RHB 46 23.1 13 10 21 1.33
2025 LHB 60 39.2 22 14 51 1.64
2025 RHB 56 31.1 25 8 25 1.05
2026 LHB 87 58.0 43 19 82 1.74
2026 RHB 81 44.1 24 16 51 1.51
Total LHB 454 338.0 253 120 387 1.50
Total RHB 411 253.0 173 86 241 1.29
Total 483 591.0 426 206 628 1.41
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.