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| Name | Team | Age |
| Duke Esper | Retired (1979, Age 35) | Died (2020, Age 76) |
| Drafted | Position | Bats/Throws |
| Round 1, Pick 16 (1967) |
RP | R/R |
| League | Option Years
|
Majors Service Time |
| Joe Medwick League | 0 | 6 years (6 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 | 9/24/1944 | |
| WS Rings | WS Appearances | LCS Appearances |
| 0 | 0 | 2 |
| 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 |
| 1967 | Minors | 65.00 | 0 / 3 | 8 / 35 | 6 / 27 | 14 / 65 |
| 1968 | Minors | 16.00 | 1 / 1 | 4 / 10 | 0 / 5 | 5 / 16 |
| 1969 | Minors | 37.00 | 0 / 4 | 3 / 21 | 1 / 12 | 4 / 37 |
| 1970 | Minors | 34.00 | 0 / 2 | 2 / 16 | 1 / 16 | 3 / 34 |
| 1971 | Minors | 23.00 | 0 / 0 | 1 / 11 | 3 / 12 | 4 / 23 |
| 1972 | Minors | 21.00 | 0 / 1 | 1 / 10 | 1 / 10 | 2 / 21 |
| 1973 | Majors | 45.24 | 1 / 12 | 1 / 16 | 0 / 17 | 2 / 45 |
| 1974 | Majors | 33.74 | 0 / 4 | 2 / 18 | 0 / 11 | 2 / 33 |
| 1975 | Majors | 34.73 | 0 / 5 | 1 / 13 | 1 / 16 | 2 / 34 |
| 1976 | Majors | 27.00 | 0 / 1 | 0 / 12 | 0 / 14 | 0 / 27 |
| 1977 | Majors | 33.40 | 0 / 1 | 0 / 20 | 1 / 12 | 1 / 33 |
| 1978 | Majors | 40.02 | -2 / 7 | -2 / 20 | -2 / 13 | -6 / 40 |
| 1979 | Minors | 2.00 | 0 / 0 | 0 / 0 | 1 / 2 | 1 / 2 |
| 1979 | Majors | 1.16 | -3 / 0 | -6 / 1 | -3 / 0 | -12 / 1 |
| Total | -3 / 41 | 15 / 203 | 10 / 167 | 22 / 411 |
| Date | Transaction |
| 1979-11-01 | Duke Esper has retired from the Free Agency Pool |
| 1979-10-03 | The San Francisco Miners have sent Jim Moreno to the minors. The San Francisco Miners have waived Les Grammas. The San Francisco Miners have waived Don Smith. The San Francisco Miners have waived Ernie Lindquist. The San Francisco Miners have waived Ed Grim. The San Francisco Miners have waived Tom Callaway. The San Francisco Miners have waived Duke Esper. The San Francisco Miners have waived Randall Ball. The San Francisco Miners have waived Bill Horstmann. The San Francisco Miners have waived Dolly Ahearne. The San Francisco Miners have waived Jason Fox. The San Francisco Miners have waived Luis Latman. The San Francisco Miners have waived Bobby Thorpe. The San Francisco Miners have waived Jim Craig. |
| 1979-09-29 | The San Francisco Miners have promoted Duke Esper to the major league team. The San Francisco Miners have promoted Ed Grim to the major league team. |
| 1979-09-29 | The San Francisco Miners have acquired Duke Esper from the waiver wire. |
| 1979-04-09 | The Philadelphia Grays have waived Duke Esper. |
| 1979-03-01 | The Philadelphia Grays have promoted John Leach to the major league team. The Philadelphia Grays have designated Duke Esper for assignment. |
| 1973-03-01 | The Philadelphia Phillies have promoted Duke Esper to the major league team. The Philadelphia Phillies have promoted Scott Hebner to the major league team. |
| 1967-04-01 | The Philadelphia Phillies have renamed Bucky McDonald to Duke Esper. |