| 12/31/2018 | ||||||
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| Saturday, October 27th, 2018 |
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| DO Freddy Guerrero retires. |
| Wednesday, June 13th, 2018 |
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| Released C Dave Thomas. |
| Released CL Norman White. |
| Released SP Jorge Mendoza. |
| Released 2B Luis Santos. |
| Released 3B José García. |
| Released RF Ángel Estrada. |
| Signed General Manager Jay Cole to a 1-year contract extension. |
| Signed Manager Morris Hudson to a 2-year contract extension. |
| Signed Pitching Coach Jerry Brindle to a 1-year contract extension. |
| Team Trainer Luis Rentería leaves the team, his contract was not renewed. |
| LF Joaquín González joins the team. |
| SS Chi-hyeon Sin joins the team. |
| C Edgardo Garza joins the team. |
| LF Ángelo Rúbio joins the team. |
| SP Ron Chapman joins the team. |
| SP Alejandro Vázquez joins the team. |
