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| Name | Team | Age |
| John Aven | Retired (1994, Age 36) | Died (2022, Age 64) |
| Drafted | Position | Bats/Throws |
| Round 3, Pick 36 (1976) |
SP | R/R |
| League | Option Years
|
Majors Service Time |
| Billy Williams League | 0 | 6 years (161 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 | 3/4/1958 | |
| 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 |
| 1976 | Minors | 45.00 | 1 / 1 | 8 / 24 | 8 / 20 | 17 / 45 |
| 1977 | Minors | 22.00 | 0 / 2 | 5 / 8 | 3 / 12 | 8 / 22 |
| 1978 | Minors | 2.00 | 0 / 0 | 0 / 1 | 0 / 1 | 0 / 2 |
| 1978 | Majors | 22.00 | 0 / 0 | 1 / 8 | 4 / 14 | 5 / 22 |
| 1979 | Minors | 42.00 | 1 / 2 | 5 / 19 | 7 / 21 | 13 / 42 |
| 1980 | Minors | 48.00 | 0 / 3 | 5 / 17 | 4 / 28 | 9 / 48 |
| 1981 | Minors | 24.00 | 1 / 2 | 3 / 17 | 1 / 5 | 5 / 24 |
| 1982 | Minors | 23.00 | 0 / 0 | 1 / 12 | 2 / 11 | 3 / 23 |
| 1983 | Minors | 12.00 | 0 / 0 | 0 / 6 | 1 / 6 | 1 / 12 |
| 1983 | Majors | 23.79 | 0 / 0 | 2 / 12 | 3 / 11 | 5 / 23 |
| 1984 | Minors | 21.00 | 0 / 0 | 1 / 10 | 1 / 11 | 2 / 21 |
| 1984 | Majors | 1.18 | 0 / 0 | 0 / 0 | 0 / 1 | 0 / 1 |
| 1985 | Majors | 29.95 | 0 / 1 | 2 / 15 | 2 / 13 | 4 / 29 |
| 1986 | Minors | 20.00 | 0 / 2 | 0 / 11 | 1 / 7 | 1 / 20 |
| 1986 | Majors | 3.55 | 0 / 0 | 0 / 1 | 0 / 2 | 0 / 3 |
| 1987 | Minors | 27.00 | 0 / 1 | 1 / 11 | 2 / 15 | 3 / 27 |
| 1988 | Minors | 30.00 | 0 / 3 | 2 / 18 | 0 / 9 | 2 / 30 |
| 1989 | Majors | 27.05 | 0 / 0 | 1 / 16 | 0 / 11 | 1 / 27 |
| 1990 | Majors | 47.51 | 0 / 8 | 0 / 20 | 0 / 19 | 0 / 47 |
| 1991 | Majors | 44.76 | 1 / 8 | 0 / 17 | 1 / 19 | 2 / 44 |
| 1992 | Majors | 43.04 | -1 / 9 | -3 / 13 | -1 / 21 | -5 / 43 |
| 1993 | Minors | 5.00 | 0 / 1 | 0 / 1 | 0 / 3 | 0 / 5 |
| 1993 | Majors | 33.87 | -3 / 3 | -3 / 15 | 0 / 15 | -6 / 33 |
| 1994 | Majors | 46.03 | -1 / 10 | -5 / 12 | -1 / 24 | -7 / 46 |
| Total | -1 / 56 | 26 / 284 | 38 / 299 | 63 / 639 |
| Date | Transaction |
| 1994-11-01 | John Aven has retired from the Free Agency Pool |
| 1994-10-23 | The Los Angeles Uber Alles have promoted Christophe Richard to the major league team. The Los Angeles Uber Alles have designated John Aven for assignment. |
| 1993-09-16 | The Los Angeles Uber Alles have promoted John Aven to the major league team. The Los Angeles Uber Alles have designated Enrique Levsen for assignment. |
| 1993-08-29 | The Los Angeles Uber Alles have acquired John Aven from the waiver wire. |
| 1993-08-25 | The St. Louis Krakens have waived John Aven. |
| 1993-08-04 | The St. Louis Krakens have designated John Aven for assignment. |
| 1990-04-05 | The St. Louis River Rats have acquired John Aven from the waiver wire. |
| 1990-04-01 | The Brooklyn Bums have promoted Davey Stellberger to the major league team. The Brooklyn Bums have promoted Ralph Cornett to the major league team. The Brooklyn Bums have sent Homer Souza to the minors. The Brooklyn Bums have designated John Aven for assignment. |
| 1989-07-29 | John Aven of the Brooklyn Bums is injured and is expected to be out 33 days. |
| 1989-03-05 | The Brooklyn Bums have promoted Paul Becker to the major league team. The Brooklyn Bums have promoted Manny Ollom to the major league team. The Brooklyn Bums have promoted John Aven to the major league team. The Brooklyn Bums have promoted Ryan Hall to the major league team. |
| 1986-04-26 | The San Diego Surf Bums have promoted Tom Johnson to the major league team. The San Diego Surf Bums have designated John Aven for assignment. |
| 1986-04-20 | John Aven of the San Diego Surf Bums is injured and is expected to be out 6 days. |
| 1986-04-05 | The San Diego Surf Bums have acquired John Aven from the waiver wire. |
| 1986-03-01 | The Kansas City Cowboys have promoted Chuck Corbin to the major league team. The Kansas City Cowboys have promoted Alex Wilson to the major league team. The Kansas City Cowboys have promoted Pete Rohrmeier to the major league team. The Kansas City Cowboys have promoted Frank Johnson to the major league team. The Kansas City Cowboys have waived Wesley Colangelo. The Kansas City Cowboys have waived Ginger Gillespie. The Kansas City Cowboys have waived John Aven. |
| 1985-04-01 | The Kansas City Cowboys have promoted John Aven to the major league team. The Kansas City Cowboys have waived Cliff Leonard. |
| 1985-03-01 | The Kansas City Cowboys have renamed Bobby Witt to John Aven. |
| 1984-10-03 | The Kansas City Cowboys have designated Bobby Witt for assignment. |
| 1984-09-24 | The Kansas City Cowboys have promoted Bobby Witt to the major league team. |
| 1984-08-10 | The Kansas City Cowboys have acquired Bobby Witt from the waiver wire. |
| 1984-06-27 | The Chicago Senators have waived Bobby Witt. |
| 1984-04-25 | The Chicago Senators have acquired Bobby Witt from the waiver wire. |
| 1984-04-08 | The Chicago Senators have waived Bobby Witt. |
| 1984-03-01 | The Chicago Senators have promoted Doyle Hargraves to the major league team. The Chicago Senators have designated Bobby Witt for assignment. |
| 1983-07-13 | The Chicago Senators have promoted Bobby Witt to the major league team. The Chicago Senators have sent Mike Murray to the minors. |
| 1979-04-11 | The Chicago Senators have acquired Bobby Witt from the waiver wire. |
| 1978-04-08 | The Chicago Hawks have waived Bobby Witt. |
| 1977-04-01 | The Chicago Hawks have renamed Mitch Williams to Bobby Witt. |
| 1977-03-07 | The Chicago Hawks have renamed Johnnie Aven to Mitch Williams. |