| 12/31/2018 | ||||||
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| Saturday, October 27th, 2018 |
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| MA Travis Crawford retires. |
| Monday, July 9th, 2018 |
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| Signed pitching coach Leonard Martin. |
| Sunday, July 1st, 2018 |
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| SP José Gallegos joins the team. |
| Monday, June 18th, 2018 |
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| Signed team doctor Luis Rentería. |
| Wednesday, June 13th, 2018 |
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| Released SP Danny Pryor. |
| Released C José Ocampo. |
| Released MR Miguel Mesa. |
| Released MR José Morales. |
| Released 2B Lawrence Yates. |
| Released MR Rodrigo Gómez. |
| Signed Manager Travis Crawford to a 1-year contract extension. |
| Signed Bench Coach José Hernández to a 2-year contract extension. |
| Pitching Coach Vic Rainville leaves the team, his contract was not renewed. |
| Scouting Director Paul Morgan leaves the team, his contract was not renewed. |
| SP Harry Barnes joins the team. |
| 2B Jesús Gonzáles joins the team. |
| SS Iván Moreno joins the team. |
| MR Rafael Mendoza joins the team. |
| MR Luis Navarro joins the team. |
| CF Pedro Mata joins the team. |
| LF Floyd Riley joins the team. |
| 2B Ernie Marshall joins the team. |
| MR Carlos Velasco joins the team. |
