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| Name | Team | Age |
| John Haines | Retired (2025, Age 33) | 78 |
| Drafted | Position | Bats/Throws |
| Round 2, Pick 25 (2015) |
RP | R/R |
| League | Option Years
|
Majors Service Time |
| Whitey Ford League | 0 | 10 years (95 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 | 12/23/1991 | |
| WS Rings | WS Appearances | LCS Appearances |
| 0 | 0 | 2 |
| 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 |
| 2015 | P | ARI | 23 | 0 | 24.33 | 4 | 0 | 4 | 0 | 0 | 0 | 1.48 | 1.000 |
| 2016 | P | ARI | 48 | 0 | 56.66 | 3 | 1 | 2 | 0 | 0 | -1 | 0.48 | 1.000 |
| 2017 | P | ARI | 49 | 0 | 58.0 | 6 | 0 | 6 | 0 | 2 | -1 | 0.93 | 1.000 |
| 2018 | P | ARI | 34 | 0 | 44.0 | 4 | 0 | 4 | 0 | 0 | 0 | 0.82 | 1.000 |
| 2019 | P | ARI | 36 | 0 | 48.0 | 7 | 1 | 6 | 0 | 1 | 0 | 1.31 | 1.000 |
| 2020 | P | ARI | 45 | 0 | 62.0 | 11 | 0 | 9 | 2 | 0 | +1 | 1.31 | .818 |
| 2021 | P | ARI | 39 | 0 | 47.0 | 5 | 0 | 5 | 0 | 0 | 0 | 0.96 | 1.000 |
| 2022 | P | ARI | 18 | 0 | 16.66 | 2 | 1 | 1 | 0 | 0 | 0 | 1.08 | 1.000 |
| 2023 | P | ARI | 31 | 0 | 36.0 | 6 | 0 | 5 | 1 | 0 | -1 | 1.25 | .833 |
| 2024 | P | ARI | 24 | 0 | 22.0 | 4 | 1 | 3 | 0 | 0 | 0 | 1.64 | 1.000 |
| 2025 | P | ARI | 23 | 0 | 23.66 | 0 | 0 | 0 | 0 | 0 | -1 | 0.00 | NaN |
| Total | 370 | 0 | 438.31 | 52 | 4 | 45 | 3 | 3 | -3 | 1.01 | .942 |
| Date | Transaction |
| 2025-11-01 | John Haines has retired from the Arizona Desert Sponges |
| 2015-06-19 | The Arizona Desert Sponges have promoted John Haines to the major league team. The Arizona Desert Sponges have sent Fred Williard to the minors. |