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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 | Type
|
Chances
|
Endurance | Velocity | Control | Total |
| 1966 | Minors | 0.00 | 0 / 1 | 0 / 6 | 1 / 5 | 1 / 12 |
| 1966 | Majors | 0.00 | 0 / 0 | 1 / 13 | 4 / 11 | 5 / 24 |
| 1967 | Minors | 0.00 | 0 / 1 | 0 / 4 | 0 / 0 | 0 / 5 |
| 1967 | Majors | 0.00 | 0 / 0 | 0 / 1 | 0 / 2 | 0 / 3 |
| 1968 | Minors | 0.00 | 0 / 0 | 0 / 1 | 0 / 2 | 0 / 3 |
| 1968 | Majors | 0.00 | 0 / 0 | 1 / 15 | 4 / 12 | 5 / 27 |
| 1969 | Minors | 0.00 | 0 / 1 | 0 / 1 | 2 / 13 | 2 / 15 |
| 1970 | Minors | 0.00 | 0 / 0 | 1 / 6 | 0 / 2 | 1 / 8 |
| 1971 | Minors | 0.00 | 0 / 0 | 0 / 2 | 1 / 5 | 1 / 7 |
| 1971 | Majors | 0.00 | 0 / 0 | 0 / 1 | 1 / 2 | 1 / 3 |
| 1972 | Minors | 0.00 | 0 / 0 | 0 / 5 | 0 / 6 | 0 / 11 |
| 1972 | Majors | 0.00 | 0 / 0 | 0 / 0 | 0 / 0 | 0 / 0 |
| 1973 | Minors | 10.00 | 0 / 2 | 0 / 3 | 0 / 6 | 0 / 11 |
| 1974 | Majors | 34.07 | 0 / 4 | 0 / 17 | 0 / 13 | 0 / 34 |
| 1975 | Majors | 35.26 | 0 / 5 | 0 / 13 | 0 / 17 | 0 / 35 |
| 1976 | Minors | 1.00 | 0 / 0 | 0 / 1 | 0 / 1 | 0 / 2 |
| 1976 | Majors | 1.03 | 0 / 0 | 0 / 1 | 0 / 0 | 0 / 1 |
| Total | 0 / 14 | 3 / 90 | 13 / 97 | 16 / 201 |
| 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. |