Red Sox Roster & Staff
Transactions
| Date | Transaction |
| 07/29/19 | Boston Red Sox signed free agent OF Alexis Hernandez to a minor league contract. |
| 07/27/19 | Boston Red Sox signed free agent P Michael Valera to a minor league contract. |
| 07/27/19 | Boston Red Sox signed free agent RHP Cesar Soto to a minor league contract. |
| 07/25/19 | Minnesota Twins traded cash to Boston Red Sox for LHP Jeremy Bleich. |
| 07/23/19 | Boston Red Sox optioned 3B Marco Hernandez to Pawtucket Red Sox. |
| 07/23/19 | Boston Red Sox activated 1B Mitch Moreland from the 10-day injured list. |
| 07/22/19 | Boston Red Sox released 2B Eduardo Nunez. |
| 07/21/19 | Boston Red Sox sent LHP Brian Johnson on a rehab assignment to Pawtucket Red Sox. |
| 07/20/19 | Boston Red Sox optioned RHP Ryan Weber to Pawtucket Red Sox. |
| 07/20/19 | Boston Red Sox activated RHP Nathan Eovaldi from the 60-day injured list. |
| 07/19/19 | Boston Red Sox sent 1B Mitch Moreland on a rehab assignment to Pawtucket Red Sox. |
| 07/18/19 | Boston Red Sox sent RHP Nathan Eovaldi on a rehab assignment to Pawtucket Red Sox. |
| 07/17/19 | Boston Red Sox signed free agent IF Kelvin Diaz to a minor league contract. |
| 07/16/19 | Boston Red Sox optioned RHP Ryan Brasier to Pawtucket Red Sox. |
| 07/16/19 | Boston Red Sox recalled LHP Darwinzon Hernandez from Pawtucket Red Sox. |
| 07/15/19 | Boston Red Sox optioned RHP Hector Velazquez to Pawtucket Red Sox. |
| 07/15/19 | Boston Red Sox recalled 1B Sam Travis from Pawtucket Red Sox. |
| 07/15/19 | Boston Red Sox recalled Ryan Weber from Pawtucket Red Sox. |
| 07/15/19 | Boston Red Sox designated 2B Eduardo Nunez for assignment. |
| 07/14/19 | Boston Red Sox placed RHP Steven Wright on the 10-day injured list. Right great toe contusion. |
| 07/14/19 | Boston Red Sox activated RHP Andrew Cashner. |
| 07/13/19 | Baltimore Orioles traded RHP Andrew Cashner and cash to Boston Red Sox for CF Elio Prado and SS Noelberth Romero. |
| 07/13/19 | Baltimore Orioles traded RHP Andrew Cashner and cash to Boston Red Sox for CF Elio Prado and SS Noelberth Romero. |
| 07/13/19 | Baltimore Orioles traded RHP Andrew Cashner and cash to Boston Red Sox for CF Elio Prado and SS Noelberth Romero. |
| 07/12/19 | Boston Red Sox signed RHP Feleipe Franks. |
| 07/12/19 | Boston Red Sox signed RHP Blake Loubier. |
| 07/12/19 | Boston Red Sox signed SS Karson Simas. |
| 07/12/19 | Boston Red Sox signed LHP Brendan Cellucci. |
| 07/12/19 | Boston Red Sox signed RHP Bradley Blalock. |
| 07/11/19 | Boston Red Sox sent 1B Mitch Moreland on a rehab assignment to Pawtucket Red Sox. |
| 07/10/19 | Boston Red Sox released RHP Tyler Thornburg. |
| 07/06/19 | Boston Red Sox signed RHP Noah Song. |
| 07/04/19 | Boston Red Sox optioned RHP Trevor Kelley to Pawtucket Red Sox. |
| 07/04/19 | Boston Red Sox activated RHP Heath Hembree from the 10-day injured list. |
| 07/04/19 | Boston Red Sox signed OF Stephen Scott. |
| 07/03/19 | Boston Red Sox sent C Oscar Hernandez outright to Pawtucket Red Sox. |
| 07/02/19 | Boston Red Sox signed free agent OF Juan Chacon to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent RHP Kawan Silva to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent C Renny Flores to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent RHP Nathanael Cruz to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent IF Allan Castro to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent C Ronald Rosario to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent OF Jackson Camejo to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent RHP Irving Medina to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent IF Jose Mendez to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent RHP Luis Perales to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent IF Jhon Garcia to a minor league contract. |
| 07/02/19 | Boston Red Sox sent RHP Heath Hembree on a rehab assignment to Pawtucket Red Sox. |
| 07/02/19 | Boston Red Sox signed free agent OF Diego Saavedra to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent C Diego Viloria to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent RHP Cesar Ruiz to a minor league contract. |
| 07/02/19 | Boston Red Sox selected the contract of Trevor Kelley from Pawtucket Red Sox. |
| 07/02/19 | Boston Red Sox signed free agent C Rivaldo Avila to a minor league contract. |
| 07/02/19 | Boston Red Sox designated C Oscar Hernandez for assignment. |
| 07/02/19 | Boston Red Sox signed free agent IF Lyonell James to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent C Carlos Diaz to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent OF Jhostynxon Garcia to a minor league contract. |
| 07/02/19 | Boston Red Sox signed free agent IF Sebastian Guerra to a minor league contract. |
| 07/01/19 | Boston Red Sox optioned 1B Sam Travis to Pawtucket Red Sox. |
| 07/01/19 | Boston Red Sox optioned RHP Mike Shawaryn to Pawtucket Red Sox. |
| 07/01/19 | Boston Red Sox optioned 2B Tzu-Wei Lin to Pawtucket Red Sox. |
