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| Name | Team | Age |
| Mark Siebern | Retired (1991, Age 34) | Died (2040, Age 83) |
| Drafted | Position | Bats/Throws |
| Round 5, Pick 78 (1980) |
RP | R/R |
| League | Option Years
|
Majors Service Time |
| Joe Medwick League | 0 | 0 years (54 games) |
| Total Rating
|
Arm | Range |
| Contact vs R | Contact vs L | Speed |
| Power vs R | Power vs L | Bunting |
| Endurance | Velocity | Control |
| Leadership
|
Mentor Value
|
|
| Health
|
Injured Days
|
Birthday |
| 0 | 7/26/1957 | |
| WS Rings | WS Appearances | LCS Appearances |
| 0 | 0 | 0 |
| Alt Pos (---) | Alt Pos (---) | Alt Pos (---) |
| (0.0 %) | (0.0 %) | (0.0 %) |
Stats | Splits | Playoffs | Energy | Improvements | Past Skills | Awards | Batting | Fielding | Game Log
| Year | Type
|
Chances
|
Endurance | Velocity | Control | Total |
| 1980 | Majors | 31.00 | 1 / 2 | 3 / 14 | 4 / 15 | 8 / 31 |
| 1981 | Majors | 30.00 | 0 / 1 | 4 / 14 | 5 / 15 | 9 / 30 |
| 1982 | Majors | 25.00 | 0 / 0 | 2 / 9 | 6 / 16 | 8 / 25 |
| 1983 | Majors | 30.00 | 1 / 3 | 4 / 14 | 8 / 13 | 13 / 30 |
| 1984 | Majors | 25.00 | 0 / 0 | 1 / 8 | 2 / 17 | 3 / 25 |
| 1985 | Majors | 19.00 | 0 / 0 | 4 / 15 | 0 / 4 | 4 / 19 |
| 1986 | Majors | 26.00 | 0 / 0 | 1 / 12 | 3 / 14 | 4 / 26 |
| 1987 | Majors | 25.00 | 0 / 0 | 1 / 13 | 1 / 12 | 2 / 25 |
| 1988 | Minors | 22.00 | 0 / 1 | 1 / 13 | 0 / 8 | 1 / 22 |
| 1988 | Majors | 8.49 | 0 / 0 | 1 / 5 | 0 / 3 | 1 / 8 |
| 1989 | Minors | 31.00 | 0 / 3 | 0 / 11 | 2 / 17 | 2 / 31 |
| 1990 | Minors | 15.00 | 0 / 2 | 1 / 9 | 0 / 4 | 1 / 15 |
| 1990 | Majors | 2.44 | 0 / 0 | 0 / 1 | 0 / 1 | 0 / 2 |
| 1991 | Minors | 25.00 | 0 / 1 | 1 / 13 | 0 / 11 | 1 / 25 |
| Total | 2 / 13 | 24 / 151 | 31 / 150 | 57 / 314 |
| Date | Transaction |
| 1991-11-01 | Mark Siebern has retired from the Baltimore Blades |
| 1990-05-05 | The Baltimore Blades have promoted Jim Weinert to the major league team. The Baltimore Blades have promoted Red Mungo to the major league team. The Baltimore Blades have designated Mark Siebern for assignment. The Baltimore Blades have designated Basil Karlo for assignment. |
| 1990-04-18 | The Baltimore Blades have promoted Mark Siebern to the major league team. |
| 1989-03-07 | The Baltimore Browns have promoted Archie Bunker to the major league team. The Baltimore Browns have designated Mark Siebern for assignment. The Baltimore Browns have designated Bob Blue for assignment. |
| 1988-08-19 | The Baltimore Browns have promoted Mark Siebern to the major league team. |
| 1988-03-07 | The Baltimore Browns have acquired Mark Siebern from the waiver wire. |
| 1980-04-01 | The San Francisco Miners have waived Mark Siebern. |