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| Name | Team | Age |
| John Mertz | Retired (1969, Age 36) | Died (2009, Age 76) |
| Drafted | Position | Bats/Throws |
| Round 1, Pick 2 (1954) |
3B | B/R |
| League | Option Years
|
Majors Service Time |
| Mookie Wilson League | 0 | 15 years (78 games) |
| Total Rating
|
Arm | Range |
| Contact vs R | Contact vs L | Speed |
| Power vs R | Power vs L | Bunting |
| Endurance | Velocity | Control |
| Leadership
|
Mentor vs RHP
|
Mentor vs LHP
|
| Health
|
Injured Days
|
Birthday |
| 0 | 8/10/1933 | |
| WS Rings | WS Appearances | LCS Appearances |
| 3 | 6 | 13 |
| Alt Pos (3B) | Alt Pos (LF) | Alt Pos (RF) |
| (77.0 %) | (3.7 %) | (1.8 %) |
Stats | Splits | Playoffs | Positions | Improvements | Past Skills | Awards | Fielding | Game Log
| Year | League | Award |
| 1959 | AL | All Star Reserve (3B) |
| 1962 | AL | All Star Starter (3B) |
| 1963 | AL | All Star Starter (3B) |
| 1964 | AL | All Star Starter (3B) |
| 1966 | AL | All Star Starter (1B) |
| Date | Transaction |
| 1969-11-01 | John Mertz has retired from the Baltimore Mudhens |
| 1968-09-24 | John Mertz of the Baltimore Mudhens is injured and is expected to be out 19 days. |
| 1967-08-23 | John Mertz of the Baltimore Mudhens is injured and is expected to be out 43 days. |
| 1966-03-25 | A trade has been completed between the Baltimore Mudhens and the Chicago Hop Heads. The Chicago Hop Heads receive Pat Rumler, Draft Pick - 1967 Round 2 (BAL) from the Baltimore Mudhens in exchange for John Mertz. |
| 1956-04-01 | The Washington Bullets have promoted John Mertz to the major league team. The Washington Bullets have sent Jim Kennedy to the minors. |
| 1956-03-01 | The Washington Bullets have promoted Jeff Brown to the major league team. The Washington Bullets have sent John Mertz to the minors. |
| 1955-09-02 | The Washington Bullets have promoted John Mertz to the major league team. The Washington Bullets have sent Joe Martin to the minors. |
| 1955-09-02 | The Washington Bullets have promoted Joe Martin to the major league team. The Washington Bullets have sent John Mertz to the minors. |
| 1955-04-01 | The Washington Bullets have promoted John Mertz to the major league team. The Washington Bullets have sent Tom Moffitt to the minors. |