D-backs Roster & Staff
Transactions
| Date | Transaction |
| 07/30/20 | Arizona Diamondbacks optioned 1B Kevin Cron to Diamondbacks Alternate Training Site. |
| 07/30/20 | Arizona Diamondbacks selected the contract of C Daulton Varsho from Diamondbacks Alternate Training Site. |
| 07/27/20 | Arizona Diamondbacks signed free agent C Alberto Rosario to a minor league contract and invited him to spring training. |
| 07/24/20 | Andy Young changed number to 14. |
| 07/24/20 | Taylor Widener changed number to 57. |
| 07/24/20 | Daulton Varsho changed number to 12. |
| 07/24/20 | Joe Mantiply changed number to 36. |
| 07/24/20 | Wyatt Mathisen changed number to 27. |
| 07/24/20 | Riley Smith changed number to 46. |
| 07/23/20 | Arizona Diamondbacks recalled P Taylor Clarke. |
| 07/23/20 | Arizona Diamondbacks recalled RHP Taylor Widener from Diamondbacks Alternate Training Site. |
| 07/23/20 | Arizona Diamondbacks recalled P Taylor Clarke. |
| 07/23/20 | Arizona Diamondbacks recalled RHP Taylor Clarke from Diamondbacks Alternate Training Site. |
| 07/23/20 | Arizona Diamondbacks recalled Kevin Cron from Diamondbacks Alternate Training Site. |
| 07/22/20 | Arizona Diamondbacks placed RHP Corbin Martin on the 10-day injured list retroactive to July 20, 2020. |
| 07/18/20 | Arizona Diamondbacks selected the contract of OF Jon Jay from Reno Aces. |
| 07/14/20 | Arizona Diamondbacks signed free agent RF Danny Oriente to a minor league contract. |
| 07/14/20 | Arizona Diamondbacks signed free agent 1B Lucas Martino. |
| 07/09/20 | Arizona Diamondbacks signed RHP Slade Cecconi. |
| 07/02/20 | Arizona Diamondbacks signed free agent OF Dominic Gonnella to a minor league contract. |
| 07/01/20 | Arizona Diamondbacks signed OF A.J. Vukovich. |