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| Name | Team | Age |
| John Proeser | Retired (1969, Age 34) | Died (2001, Age 66) |
| Drafted | Position | Bats/Throws |
| Undrafted (1958) |
RP | R/R |
| League | Option Years
|
Majors Service Time |
| Whitey Ford League | 0 | 1 years (21 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 | 5/30/1935 | |
| 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
| Date | Transaction |
| 1969-11-01 | John Proeser has retired from the Free Agency Pool |
| 1969-07-31 | The San Francisco Seals have waived John Proeser. The San Francisco Seals have waived Jim Boyd. |
| 1969-07-05 | The San Francisco Seals have designated John Proeser for assignment. |
| 1968-08-05 | John Proeser of the San Francisco Seals is injured and is expected to be out 22 days. |
| 1968-05-27 | John Proeser of the San Francisco Seals is injured and is expected to be out 23 days. |
| 1968-04-30 | The San Francisco Seals have promoted John Proeser to the major league team. |
| 1968-04-30 | The San Francisco Seals have acquired John Proeser from the waiver wire. |