Cardinals Roster & Staff
Transactions
| Date | Transaction |
| 07/31/15 | Milwaukee Brewers traded RHP Jonathan Broxton and cash to St. Louis Cardinals for LF Malik Collymore. |
| 07/31/15 | St. Louis Cardinals activated RHP Jonathan Broxton. |
| 07/31/15 | St. Louis Cardinals designated RHP Marcus Hatley for assignment. |
| 07/31/15 | Milwaukee Brewers traded RHP Jonathan Broxton and cash to St. Louis Cardinals for LF Malik Collymore. |
| 07/31/15 | St. Louis Cardinals optioned RHP Miguel Socolovich to Memphis Redbirds. |
| 07/30/15 | St. Louis Cardinals recalled Greg Garcia from Memphis Redbirds. |
| 07/30/15 | Cleveland Indians traded 1B Brandon Moss to St. Louis Cardinals for LHP Rob Kaminsky. |
| 07/30/15 | Cleveland Indians traded 1B Brandon Moss to St. Louis Cardinals for LHP Rob Kaminsky. |
| 07/30/15 | St. Louis Cardinals placed LF Matt Holliday on the 15-day disabled list. right quadriceps strain |
| 07/30/15 | St. Louis Cardinals designated 1B Dan Johnson for assignment. |
| 07/29/15 | St. Louis Cardinals sent RHP Jordan Walden on a rehab assignment to Memphis Redbirds. |
| 07/28/15 | St. Louis Cardinals optioned RHP Sam Tuivailala to Memphis Redbirds. |
| 07/28/15 | St. Louis Cardinals activated LHP Jaime Garcia from the 15-day disabled list. |
| 07/27/15 | St. Louis Cardinals optioned RHP Mitch Harris to Memphis Redbirds. |
| 07/25/15 | St. Louis Cardinals optioned LHP Tim Cooney to Memphis Redbirds. |
| 07/25/15 | St. Louis Cardinals activated RHP Steve Cishek. |
| 07/24/15 | Miami Marlins traded RHP Steve Cishek to St. Louis Cardinals for Kyle Barraclough. |
| 07/24/15 | Miami Marlins traded RHP Steve Cishek to St. Louis Cardinals for Kyle Barraclough. |
| 07/24/15 | St. Louis Cardinals transferred RHP Matt Belisle from the 15-day disabled list to the 60-day disabled list. Right elbow inflammation |
| 07/23/15 | St. Louis Cardinals sent RHP Jordan Walden on a rehab assignment to Springfield Cardinals. |
| 07/23/15 | St. Louis Cardinals sent LHP Jaime Garcia on a rehab assignment to Peoria Chiefs. |
| 07/22/15 | Toronto Blue Jays claimed 2B Ty Kelly off waivers from St. Louis Cardinals. |
| 07/21/15 | St. Louis Cardinals sent RHP Mitch Harris on a rehab assignment to Memphis Redbirds. |
| 07/21/15 | St. Louis Cardinals designated 2B Ty Kelly for assignment. |
| 07/21/15 | St. Louis Cardinals selected the contract of RF Stephen Piscotty from Memphis Redbirds. |
| 07/20/15 | St. Louis Cardinals optioned CF Tommy Pham to Memphis Redbirds. |
| 07/17/15 | St. Louis Cardinals optioned LHP Nick Greenwood to Memphis Redbirds. |
| 07/17/15 | St. Louis Cardinals activated LF Matt Holliday from the 15-day disabled list. |
| 07/14/15 | St. Louis Cardinals signed free agent SS Moises Castillo to a minor league contract. |
| 07/11/15 | St. Louis Cardinals recalled Sam Tuivailala from Memphis Redbirds. |
| 07/11/15 | Mitch Harris roster status changed by St. Louis Cardinals. |
| 07/11/15 | St. Louis Cardinals optioned 1B Xavier Scruggs to Memphis Redbirds. |
| 07/11/15 | St. Louis Cardinals recalled Nick Greenwood from Memphis Redbirds. |
| 07/10/15 | St. Louis Cardinals sent SS Aledmys Diaz outright to Springfield Cardinals. |
| 07/09/15 | St. Louis Cardinals signed free agent 3B Dylan Becker to a minor league contract. |
| 07/09/15 | St. Louis Cardinals signed free agent SS Champ Rowland to a minor league contract. |
| 07/09/15 | St. Louis Cardinals signed RHP Paul Salazar. |
| 07/08/15 | St. Louis Cardinals optioned RHP Marcus Hatley to Memphis Redbirds. |
| 07/08/15 | St. Louis Cardinals designated SS Aledmys Diaz for assignment. |
| 07/08/15 | St. Louis Cardinals optioned LHP Tyler Lyons to Memphis Redbirds. |
| 07/08/15 | St. Louis Cardinals selected the contract of 1B Dan Johnson from Memphis Redbirds. |
| 07/07/15 | St. Louis Cardinals recalled Tyler Lyons from Memphis Redbirds. |
| 07/07/15 | St. Louis Cardinals signed LHP Jacob Schlesener. |
| 07/05/15 | St. Louis Cardinals placed LHP Jaime Garcia on the 15-day disabled list retroactive to July 1, 2015. Left groin strain. |
| 07/05/15 | St. Louis Cardinals recalled Tim Cooney from Memphis Redbirds. |
| 07/04/15 | St. Louis Cardinals recalled RHP Mitch Harris from Memphis Redbirds. |
| 07/04/15 | St. Louis Cardinals optioned 2B Greg Garcia to Memphis Redbirds. |
| 07/03/15 | St. Louis Cardinals recalled Tommy Pham from Memphis Redbirds. |
| 07/03/15 | St. Louis Cardinals optioned LHP Tim Cooney to Memphis Redbirds. |
| 07/02/15 | St. Louis Cardinals recalled Tim Cooney from Memphis Redbirds. |
| 07/02/15 | St. Louis Cardinals placed CF Jon Jay on the 15-day disabled list retroactive to July 1, 2015. left wrist stress reaction/bone bruise |
| 07/02/15 | St. Louis Cardinals signed free agent RHP Brian Pirela to a minor league contract. |
| 07/02/15 | St. Louis Cardinals signed free agent RHP Alvaro Seijas to a minor league contract. |
| 07/02/15 | St. Louis Cardinals signed RHP Alvaro Seijas. |
| 07/02/15 | St. Louis Cardinals signed free agent RHP Noel De Jesus to a minor league contract. |
| 07/02/15 | St. Louis Cardinals signed free agent SS Raffy Ozuna to a minor league contract. |
| 07/02/15 | St. Louis Cardinals signed free agent RHP Anthony Trompiz to a minor league contract. |