| | SS | Signed (wins arbitration) |
| | RP | Starting to Serve Illegal Substance Suspension (Signed) |
| | RP | Suspension Announced By League (162 games for violating MLB drug program) |
| | RP | Signed to a Minor League Contract (Signed) |
| | RP | Outrighted to Minors (Signed) |
| | RF | Signed (avoids arbitration) |
| | SS | Signed (avoids arbitration) |
| | RP | Signed (avoids arbitration) |
| | RP | Signed (avoids arbitration) |
| | RP | Signed (avoids arbitration) |
| | RP | Designated for Assignment (Signed) |
| | RP | Traded (for P Peyton Battenfield, 3-player deal) From |
| | C | Signed as Free Agent (two-year contract) |
| | RP | Signed as Free Agent (two-year contract) |
| | SP | Signed (avoids arbitration) |
| | SP | Traded (w\OF Kenedy Corona for OF Jake Marisnick) From |
| | CF | Traded (for LHP Blake Taylor & OF Kenedy Corona) To |
| | RP | Signed (avoids arbitration) |
| | SP | Free Agent - No Contract Offer (non-tendered) |
| | C | Signed as Free Agent (one-year contract) |
| | SP | Purchased From Minors (Signed) |
| | RP | Purchased From Minors (Signed) |
| | RP | Purchased From Minors (Signed) |
| | 1B | Purchased From Minors (Signed) |
| | RP | Purchased From Minors (Signed) |
| | SP | Tendered Qualifying Offer (declined) |
| | RP | Declared Free Agency (Signed) |
| | RP | Declared Free Agency (Signed) |
| | SP | Declared Free Agency (Signed) |
| | RP | Declared Free Agency (Signed) |
| | C | Declared Free Agency (Signed) |
| | RP | Declared Free Agency (Signed) |
| | SP | Declared Free Agency (Signed) |
| | C | Declared Free Agency (Signed) |
| | RP | Called Up from Minors (Signed) |
| | SP | Called Up from Minors (Signed) |
| | RP | Removed From 10-Day IL (Right elbow dfiscomfort) |
| | SP | Removed From 10-Day IL (Right shoulder surgery - out for season) |
| | RP | Called Up from Minors (Signed) |
| | RP | Removed From 10-Day IL (Right shoulder discomfort) |
| | RP | Removed From 10-Day IL (Right knee arthroscopic surgery) |
| | SS | Removed From 10-Day IL (Back discomfort) |
| | SS | Recalled From Minors Rehab (Signed) |
| | SS | Called Up from Minors (Signed) |
| | SS | Sent to Minors for Rehabilitation (Signed) |
| | RP | Cleared Waivers and Became a Free Agent (Signed) |
| | RP | Called Up from Minors (Signed) |
| | CF | Called Up from Minors (Signed) |
| | RP | Released (Signed) |
| | RP | Designated for Assignment (Signed) |
| | LF | Called Up from Minors (Signed) |
| | C | Called Up from Minors (Signed) |
| | RP | Called Up from Minors (Signed) |
| | SP | Recalled From Minors Rehab (Signed) |
| | SP | Removed From 10-Day IL (Right shoulder soreness) |
| | RP | Placed on 10-Day IL (Right elbow dfiscomfort) |
| | SP | Called Up from Minors (Signed) |
| | SP | Released (Signed) |
| | RP | Placed on 10-Day IL (Right shoulder discomfort) |
| | RP | Called Up from Minors (Signed) |
| | SS | Removed From 10-Day IL (Illness) |
| | SS | Recalled From Minors Rehab (Signed) |
| | RP | Called Up from Minors (Signed) |
| | CF | Sent to Minors (Signed) |
| | RP | Sent to Minors (Signed) |
| | RP | Cleared Waivers and Became a Free Agent (Signed) |
| | SS | Sent to Minors for Rehabilitation (Signed) |
| | 3B | Purchased From Minors (Signed) |
| | SP | Sent to Minors for Rehabilitation (Signed) |
| | RP | Called Up from Minors (Signed) |
| | RP | Placed on 10-Day IL (Right knee arthroscopic surgery) |
| | RP | Designated for Assignment (Signed) |
| | RP | Released (Signed) |
| | RP | Called Up from Minors (Signed) |
| | CF | Called Up from Minors (Signed) |
| | SS | Sent to Minors (Signed) |
| | SP | Placed on 10-Day IL (Right shoulder surgery - out for season) |
| | SS | Placed on 10-Day IL (Back discomfort) |
| | SS | Called Up from Minors (Signed) |
| | RP | Recalled From Minors Rehab (Signed) |
| | SS | Placed on 10-Day IL (Illness) |
| | RP | Called Up from Minors (Signed) |
| | RP | Removed From 10-Day IL (Right shoulder discomfort) |
| | RP | Sent to Minors (Signed) |
| | SP | Sent to Minors (Signed) |
| | SP | Called Up from Minors (Signed) |
| | RP | Sent to Minors (Signed) |
| | RP | Called Up from Minors (Signed) |
| | RP | Sent to Minors (Signed) |
| | CF | Called Up from Minors (recalled as 26th roster player) |
| | CF | Return of 26th man (Signed) |
| | RP | Removed From 10-Day IL (Right knee contusion) |
| | RP | Recalled From Minors Rehab (Signed) |
| | C | Sent to Minors (Signed) |
| | RP | Sent to Minors for Rehabilitation (Signed) |
| | RP | Sent to Minors for Rehabilitation (Signed) |
| | C | Called Up from Minors (Signed) |
| | RP | Sent to Minors (Signed) |
| | CF | Reinstated From League Suspension (Signed) |
| | SP | Sent to Minors (Signed) |
| | CF | Sent to Minors (Signed) |
| | RP | Sent to Minors (Signed) |
| | SP | Traded (for RHP Zack Greinke, five-player deal) To |
| | SP | Traded (for RHP Zack Greinke, five-player deal) To |
| | SP | NTR - Called Up From Minors (Signed) |
| | SP | Traded (for RHP Corbin Martin, five-player deal) From |
| | LF | Traded (for C Martin Maldonado) To |
| | C | Traded (for OFs Rainier Rivas & Raider Uceta) To |
| | C | Traded (for OF Tony Kemp) From |
| | LF | Traded (for RHP Aaron Sanchez, four-player deal) To |
| | LF | NTR - Called Up From Minors (Signed) |
| | RP | Called Up from Minors (Signed) |
| | RP | Placed on 10-Day IL (Right knee contusion) |
| | RP | Traded (for OF Derek Fisher, four-player deal) From |
| | SP | Traded (for OF Derek Fisher, four-player deal) From |
| | 2B | Traded (for RHP Zack Greinke, five-player deal) To |
| | LF | Traded (for RHP Zack Greinke, five-player deal) To |
| | CF | Starting to Serve Suspension (Signed) |
