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| Name | Team | Age |
| John Mossor | Retired (1982, Age 37) | Died (2025, Age 80) |
| Drafted | Position | Bats/Throws |
| Round 1, Pick 5 (1963) |
SP | R/R |
| League | Option Years
|
Majors Service Time |
| Barry Zito League | 0 | 14 years (148 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 | 7/21/1945 | |
| WS Rings | WS Appearances | LCS Appearances |
| 2 | 8 | 11 |
| 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 | Opponent | W | L | GS | SV | BS | IP | H | R | ER | BB | SO | WHIP | ERA |
| Date | Transaction |
| 1982-11-01 | John Mossor has retired from the Colorado Renegades |
| 1982-03-30 | The Colorado Renegades have promoted John Dellucci to the major league team. The Colorado Renegades have promoted Lloyd Tucker to the major league team. The Colorado Renegades have promoted Fritz Demeter to the major league team. The Colorado Renegades have promoted John Mossor to the major league team. The Colorado Renegades have promoted Joe Norris to the major league team. The Colorado Renegades have promoted Charlie Dravecky to the major league team. |
| 1982-03-30 | John Mossor has signed with the Colorado Renegades for $0.65M per year for 1 year. |
| 1981-08-15 | John Mossor of the Los Angeles Bravos is injured and is expected to be out 14 days. |
| 1981-04-18 | Trade #1155284 has been completed between the Oakland Athletics and the Los Angeles Bravos. The Los Angeles Bravos receive John Mossor, Draft Pick - 1984 Round 1 (OAK) from the Oakland Athletics in exchange for Jack John. |
| 1979-04-06 | John Mossor of the Oakland Athletics is injured and is expected to be out 26 days. |
| 1977-03-29 | The Oakland Athletics have promoted John Mossor to the major league team. |
| 1977-03-29 | John Mossor has signed with the Oakland Athletics for $12.11M per year for 5 years. |
| 1975-03-30 | The San Diego Perfect Tens have promoted Harry Simpson to the major league team. The San Diego Perfect Tens have promoted John Mossor to the major league team. The San Diego Perfect Tens have promoted Clarence Brown to the major league team. The San Diego Perfect Tens have promoted Mike Karger to the major league team. The San Diego Perfect Tens have promoted Sandy Murchison to the major league team. |
| 1975-03-30 | John Mossor has signed with the San Diego Perfect Tens for $11.8M per year for 2 years. |
| 1974-03-29 | The San Diego Perfect Tens have promoted Danny Moose to the major league team. The San Diego Perfect Tens have promoted Javier Quintana to the major league team. The San Diego Perfect Tens have promoted John Mossor to the major league team. The San Diego Perfect Tens have sent Lee Brown to the minors. The San Diego Perfect Tens have sent Mike Gehrman to the minors. The San Diego Perfect Tens have sent Darrell Fahrer to the minors. |
| 1974-03-29 | John Mossor has signed with the San Diego Perfect Tens for $8.5M per year for 1 year. |
| 1972-09-21 | John Mossor of the San Diego Perfect Tens is injured and is expected to be out 21 days. |
| 1969-03-29 | The San Diego Perfect Tens have promoted Moose McDonald to the major league team. The San Diego Perfect Tens have promoted John Mossor to the major league team. |
| 1968-10-09 | The San Diego Perfect Tens have sent John Mossor to the minors. The San Diego Perfect Tens have sent Ted Lampe to the minors. |
| 1968-05-14 | The San Diego Perfect Tens have promoted John Mossor to the major league team. The San Diego Perfect Tens have sent Ted Lampe to the minors. |
| 1965-07-01 | A trade has been completed between the Seattle Sea Monsters and the San Diego Lollipops. The San Diego Lollipops receive Champ Wilke, Jeromy Sawyer, John Mossor, Walt Spencer from the Seattle Sea Monsters in exchange for Stan Clarke. Protest This Trade. |
| 1962-10-23 | A trade has been completed between the Seattle Grunge and the Detroit Blazers. The Detroit Blazers receive Mike Laboy, Benny Davie, John Ancker, Draft Pick 1963 Round 1 SEA (Josh Nilsson) from the Seattle Grunge in exchange for Walt Spencer, Lou Oates, Ken Beckman, Tommy Grace, Draft Pick 1963 Round 1 TB (John Mossor). Protest This Trade. |
| 1961-04-01 | A trade has been completed between the Detroit Blazers and the Tampa Bay Tusks. The Tampa Bay Tusks receive Al Crowell, Dave Weekly, Jeff Clark, Draft Pick 1962 Round 2 OAK (Jim Swanson) from the Detroit Blazers in exchange for Teddy Thomas, Draft Pick 1963 Round 1 TB (John Mossor). Protest This Trade. |