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| Name | Team | Age |
| John Mattern | Retired (2269, Age 33) | Died (2312, Age 77) |
| Drafted | Position | Bats/Throws |
| Round 4, Pick 57 (2258) |
RP | R/R |
| League | Option Years
|
Majors Service Time |
| Robin Yount League | 0 | 0 years (2 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 | 12/11/2235 | |
| 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 | POS | Team | G | GS | INN | TC | PO | A | E | DP | +/- | RF
|
FPCT |
| 2267 | P | SD | 1 | 1 | 7.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.00 | NaN |
| Total | 1 | 1 | 7.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.00 | NaN |
| Date | Transaction |
| 2269-11-01 | John Mattern has retired from the San Diego Rattlers |
| 2267-05-12 | The San Diego Rattlers have promoted Tex Karst to the major league team. The San Diego Rattlers have designated John Mattern for assignment. |
| 2267-05-09 | The San Diego Rattlers have promoted John Mattern to the major league team. |
| 2261-05-09 | The San Diego Rattlers have acquired John Mattern from the waiver wire. |
| 2258-04-18 | The Minnesota Exchange have waived John Mattern. |