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| Name | Team | Age |
| Willie Semproch | Retired (1976, Age 35) | Died (2017, Age 76) |
| Drafted | Position | Bats/Throws |
| Round 1, Pick 10 (1966) |
RP | R/R |
| League | Option Years
|
Majors Service Time |
| Orlando Cepeda League (AA) | 0 | 3 years (146 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 | 1/7/1941 | |
| WS Rings | WS Appearances | LCS Appearances |
| 1 | 1 | 1 |
| 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
|
Team | W | L | G | GS | CG | SHO | SV | BS | IP | H | R | ER | HBP | BB | SO | WHIP | ERA |
| 1966 | MIL | 4 | 2 | 52 | 0 | 0 | 0 | 0 | 0 | 72.1 | 74 | 38 | 38 | 1 | 47 | 56 | 1.67 | 4.73 |
| 1967 | MIL | 1 | 1 | 10 | 0 | 0 | 0 | 0 | 0 | 7.2 | 8 | 7 | 6 | 0 | 3 | 2 | 1.43 | 7.04 |
| 1968 | MIL | 1 | 4 | 59 | 0 | 0 | 0 | 0 | 0 | 80.2 | 107 | 81 | 73 | 2 | 42 | 66 | 1.85 | 8.14 |
| 1971 | MIL | 1 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 9.1 | 9 | 3 | 2 | 0 | 4 | 10 | 1.39 | 1.93 |
| 1974 | MIL | 6 | 4 | 67 | 0 | 0 | 0 | 0 | 0 | 70.0 | 67 | 28 | 26 | 4 | 27 | 57 | 1.34 | 3.34 |
| 1975 | MIL | 7 | 5 | 70 | 0 | 0 | 0 | 0 | 0 | 72.0 | 63 | 27 | 27 | 0 | 34 | 58 | 1.35 | 3.38 |
| 1976 | MIL | 0 | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 0.2 | 4 | 4 | 4 | 0 | 0 | 0 | 6.00 | 54.00 |
| 2206 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0.00 | |
| Total | 20 | 17 | 269 | 0 | 0 | 0 | 0 | 0 | 313.0 | 332 | 188 | 176 | 7 | 157 | 249 | 1.56 | 5.06 |
| Date | Transaction |
| 1976-11-01 | Willie Semproch has retired from the Free Agency Pool |
| 1976-06-06 | The Milwaukee Sounders have waived Willie Semproch. |
| 1976-04-04 | The Milwaukee Sounders have designated Willie Semproch for assignment. |
| 1974-04-11 | The Milwaukee Sounders have acquired Willie Semproch from the waiver wire. |
| 1974-04-01 | The St. Louis Tigers have promoted Lloyd Pisoni to the major league team. The St. Louis Tigers have designated Willie Semproch for assignment. |
| 1974-04-01 | The St. Louis Tigers have promoted Willie Semproch to the major league team. |
| 1971-07-10 | The St. Louis Tigers have sent Willie Semproch to the minors. |
| 1971-06-19 | The St. Louis Tigers have promoted Willie Semproch to the major league team. |
| 1970-07-10 | A trade has been completed between the Chicago Wonders and the St. Louis Tigers. The St. Louis Tigers receive Jim Shepard, Willie Semproch, Draft Pick - 1971 Round 3 (CHA) from the Chicago Wonders in exchange for Phil Webb. |
| 1968-09-03 | The Kansas City Wonders have promoted Steve Mmahat to the major league team. The Kansas City Wonders have sent Willie Semproch to the minors. |
| 1968-07-15 | The Kansas City Wonders have promoted Willie Semproch to the major league team. |
| 1968-07-13 | The Kansas City Wonders have promoted Jim Beasley to the major league team. The Kansas City Wonders have sent Willie Semproch to the minors. |
| 1968-04-01 | The Kansas City Wonders have promoted Willie Semproch to the major league team. The Kansas City Wonders have designated Onan Campos for assignment. |
| 1967-08-17 | The Boston Wonders have sent Willie Semproch to the minors. |
| 1967-07-23 | The Boston Wonders have promoted Willie Semproch to the major league team. |
| 1967-04-05 | The Boston Wonders have demoted Willie Semproch to the minor leagues. |
| 1966-05-06 | The Boston Wonders have promoted Willie Semproch to the major league team. The Boston Wonders have sent Buck Carnett to the minors. |