| Arizona Diamondbacks | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/14/12 | Stephen Drew | SS | Ankle | 15-day DL. Expected to begin Triple-A rehab assignment May 20 |
| 05/05/12 | Daniel Hudson | SP | Shoulder | 15-day DL. Out until at least late May |
| 05/15/12 | Chris Young | CF | Shoulder | 15-day DL. On Class A rehab assignment |
| 04/30/12 | Geoff Blum | 3B | Oblique | 60-day DL. Out until at least late June |
| 04/21/12 | Takashi Saito | RP | Calf | 15-day DL. On Class A rehab assignment |
| Atlanta Braves | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/12/12 | Robert Fish | RP | Elbow | 15-day DL. Out until at least late May |
| 05/15/12 | Freddie Freeman | 1B | Eye | Questionable for May 16 vs. Miami |
| 04/20/12 | Anthony Varvaro | RP | Pectoral | 15-day DL. On Triple-A rehab assignment |
| 03/30/12 | Arodys Vizcaino | RP | Elbow | 15-day DL. Out for season |
| Baltimore Orioles | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/07/12 | Tsuyoshi Wada | SP | Elbow, neck | 60-day DL. Out for season |
| 05/10/12 | Zach Britton | SP | Shoulder | 15-day DL. Out until at least late May |
| 05/10/12 | Endy Chavez | LF | Oblique | 15-day DL. Out until at least late May |
| 05/11/12 | Matt Lindstrom | RP | Finger | 15-day DL. Out until at least late May |
| 05/14/12 | Nolan Reimold | LF | Neck | 15-day DL. Out until at least late May |
| 05/12/12 | Mark Reynolds | 3B | Oblique | 15-day DL. Out until at least late May |
| 05/15/12 | Taylor Teagarden | C | Back | 60-day DL. Out until at least early June |
| 03/26/12 | Brian Roberts | 2B | Concussion | 15-day DL. Out until at least late May |
| Boston Red Sox | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/08/12 | Andrew Bailey | RP | Thumb | 60-day DL. Out until at least late July |
| 05/06/12 | Aaron Cook | SP | Leg | 15-day DL. Out until at least late May |
| 05/04/12 | Carl Crawford | LF | Wrist, elbow | 60-day DL. Out until at least mid-July |
| 05/15/12 | Felix Doubront | SP | Head | Probable for May 17 at Tampa Bay |
| 05/14/12 | Jacoby Ellsbury | CF | Shoulder | 60-day DL. Out until at least late June |
| 05/07/12 | Daisuke Matsuzaka | SP | Elbow | 15-day DL. On Triple-A rehab assignment |
| 05/13/12 | Darnell McDonald | LF | Lat | 15-day DL. Out until at least late May |
| 05/15/12 | Kevin Youkilis | 3B | Back | 15-day DL. Expected to begin Triple-A rehab assignment May 16 |
| 04/04/12 | Chris Carpenter | RP | Elbow | 60-day DL. Out until at least early June |
| 04/04/12 | Ryan Kalish | CF | Shoulder | 60-day DL. Out until at least early June |
| 04/22/12 | Jason Repko | CF | Shoulder | 15-day DL. Out until at least early May |
| 02/21/12 | Bobby Jenks | RP | Back | 60-day DL. Out until at least early June |
| 02/21/12 | John Lackey | SP | Elbow | 60-day DL. Out for season |
| Chicago Cubs | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/12/12 | Carlos Marmol | RP | Hamstring | 15-day DL. Out until at least late May |
| 04/28/12 | Steve Clevenger | C | Oblique | 15-day DL. Out until at least mid-May |
| 04/05/12 | Marcos Mateo | RP | Elbow | 60-day DL. Out until at least early June |
| Chicago White Sox | |||||
| Updated | Player | Pos | Injury | Expected Return | |
| No injuries reported. | |||||
| Cincinnati Reds | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 04/16/12 | Ryan Madson | RP | Elbow | 60-day DL. Out for season |
| 05/12/12 | Scott Rolen | 3B | Shoulder | 15-day DL. Out until at least late May |
| 04/27/12 | Bill Bray | RP | Groin | 15-day DL. On Triple-A rehab assignment |
| 04/17/12 | Nick Masset | RP | Shoulder | 15-day DL. Out until at least mid-May |
| Cleveland Indians | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 04/06/12 | Carlos Carrasco | SP | Elbow | 60-day DL. Out until at least late August |
| 05/15/12 | Jack Hannahan | 3B | Back | Questionable for May 16 vs. Seattle |
| 05/12/12 | Rafael Perez | RP | Back | 15-day DL. Out until at least late May |
| 05/07/12 | Grady Sizemore | CF | Back | 60-day DL. Out until at least early June |
| 05/12/12 | Josh Tomlin | SP | Wrist | 15-day DL. Out until at least late May |
| Colorado Rockies | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/01/12 | Hector Gomez | SS | Groin | 15-day DL. Out until at least early May |
| 05/07/12 | Jhoulys Chacin | SP | Shoulder | 15-day DL. Out until at least late May |
| 05/13/12 | Jorge De La Rosa | SP | Elbow, forearm | 15-day DL. On Double-A rehab assignment |
| 05/16/12 | Dexter Fowler | CF | Eye | Probable for May 16 vs. Arizona |
| 05/16/12 | Jason Giambi | 1B | Foot | Questionable for May 16 vs. Arizona |
| 01/05/12 | Eliezer Alfonzo | C | Suspension | 100-game suspension |
| Detroit Tigers | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/02/12 | Luis Marte | RP | Hamstring | 15-day DL. Out until at least mid-May |
| 05/14/12 | Daniel Schlereth | RP | Shoulder | 15-day DL. Out until at least late May |
| 05/15/12 | Jose Valverde | RP | Back | Questionable for May 16 vs. Minnesota |
| 05/14/12 | Justin Verlander | SP | Finger | Probable for May 18 start vs. Pittsburgh |
| 04/24/12 | Al Alburquerque | RP | Elbow | 60-day DL. Out until at least mid-July |
| 04/11/12 | Victor Martinez | C | Knee | 60-day DL. Out until at least late August. Possibly out for season |
| Houston Astros | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 04/16/12 | Sergio Escalona | RP | Elbow | 15-day DL. Out for season |
| 05/01/12 | Kyle Weiland | SP | Shoulder | 15-day DL. Out until at least late May |
| Kansas City Royals | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/01/12 | Blake Wood | RP | Elbow | 15-day DL. Out until at least early May |
| 05/03/12 | Yuniesky Betancourt | SS | Ankle | 15-day DL. Out until at least mid-May |
| 05/04/12 | Lorenzo Cain | CF | Groin | 15-day DL. Out until at least mid-June |
| 05/14/12 | Danny Duffy | SP | Elbow | 15-day DL. Out until at least late May |
| 05/09/12 | Jonathan Sanchez | SP | Biceps | 15-day DL. Out until at least late May |
| 05/03/12 | Joakim Soria | RP | Elbow | 60-day DL. Out for season |
| 03/20/12 | Salvador Perez | C | Knee | 60-day DL. Out until at least early June |
| 03/20/12 | Manny Pina | C | Knee | 60-day DL. Out until at least early May |
| Los Angeles Angels | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 04/22/12 | Michael Kohn | RP | Forearm | 15-day DL. Out for the season |
| 05/07/12 | LaTroy Hawkins | RP | Finger | 15-day DL. Out until at least early June |
| 05/11/12 | Chris Iannetta | C | Wrist | 15-day DL. Out until at least late June |
| 04/13/12 | Jeremy Moore | CF | Hip | 60-day DL. Out until at least mid-June |
| Los Angeles Dodgers | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/06/12 | Matt Guerrier | RP | Elbow | 15-day DL. Out until at least late May |
| 05/11/12 | Jerry Hairston | 3B | Hamstring | 15-day DL. Out until at least mid-May |
| 05/15/12 | Matt Kemp | CF | Hamstring | 15-day DL. Out until at least late May |
| 05/11/12 | Juan Rivera | LF | Hamstring | 15-day DL. Out until at least late June |
| 05/14/12 | Juan Uribe | 3B | Wrist | 15-day DL. Out until at least late May |
| 03/27/12 | Blake Hawksworth | RP | Elbow | 60-day DL. Out until at least late May |
| 02/23/12 | Rubby De La Rosa | SP | Elbow | 60-day DL. Out until at least mid-July |
| Miami Marlins | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 04/05/12 | Jose Ceda | RP | Elbow | 15-day DL. Out for season |
| Milwaukee Brewers | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/05/12 | Mat Gamel | 1B | Knee | 60-day DL. Likely out for season |
| 05/13/12 | Carlos Gomez | CF | Hamstring | 15-day DL. Expected to begin Class A rehab assignment May 16 |
| 05/07/12 | Alex Gonzalez | SS | Knee | 15-day DL. Out for season |
| 05/02/12 | Brandon Kintzler | RP | Elbow | 15-day DL. On Class A rehab assignment |
| 04/29/12 | Chris Narveson | SP | Shoulder | 60-day DL. Out for season |
| Minnesota Twins | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/15/12 | Justin Morneau | DH | Wrist | 15-day DL. Expected to return May 16 at Detroit |
| 05/15/12 | Denard Span | CF | Hamstring | Questionable for May 16 at Detroit |
| 05/13/12 | Kyle Waldrop | RP | Elbow | 15-day DL. On Class A rehab assignment |
| 04/14/12 | Scott Baker | SP | Elbow | 60-day DL. Out for season |
| New York Mets | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/01/12 | Pedro Beato | RP | Shoulder | 15-day DL. Out until at least early May |
| 05/06/12 | Jason Bay | LF | Ribs | 15-day DL. Out until at least mid-May |
| 05/13/12 | R.A. Dickey | SP | Wrist | Probable for May 17 start vs. Cincinnati |
| 05/16/12 | Rob Johnson | C | Thumb | Questionable for May 16 vs. Cincinnati |
| 05/04/12 | Mike Pelfrey | SP | Elbow | 60-day DL. Out for season |
| 05/07/12 | Ruben Tejada | SS | Quad | 15-day DL. Out until at least mid-May |
| 05/08/12 | Josh Thole | C | Head | 7-day DL. Out until at least mid-May |
| New York Yankees | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/13/12 | Mariano Rivera | RP | Knee | 60-day DL. Likely out for season |
| 05/05/12 | Michael Pineda | SP | Shoulder | 60-day DL. Out for season |
| 05/01/12 | Brad Meyers | SP | Shoulder | 15-day DL. Out until at least early May |
| 04/22/12 | Austin Romine | C | Back | 15-day DL. Out until at least early May |
| 05/01/12 | Cesar Cabral | RP | Elbow | 15-day DL. Out until at least mid-May |
| 05/03/12 | Joba Chamberlain | RP | Elbow, ankle | 60-day DL. Out until at least late June |
| 05/11/12 | Brett Gardner | LF | Elbow | 15-day DL. Out until at least late May |
| 05/15/12 | Raul Ibanez | LF | Elbow | Questionable for May 16 at Toronto |
| 05/15/12 | Ivan Nova | SP | Foot | Questionable for May 19 start vs. Cincinnati |
| 05/15/12 | David Robertson | RP | Ribs | 15-day DL. Out until at least late May |
| 02/27/12 | David Aardsma | RP | Elbow | 60-day DL. Out until at least early July |
| 02/22/12 | Pedro Feliciano | RP | Shoulder | 60-day DL. Out until at least early August |
| Oakland Athletics | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/02/12 | Dallas Braden | SP | Shoulder | 60-day DL. Out until at least early June |
| 05/12/12 | Yoenis Cespedes | CF | Hand | 15-day DL. Out until at least late May |
| 05/04/12 | Coco Crisp | LF | Illness | 15-day DL. Out until at least mid-May |
| 05/15/12 | Joey Devine | RP | Biceps, elbow | 60-day DL. Out for season |
| 05/15/12 | Brandon Inge | 2B | Groin | Questionable for May 16 at Texas |
| 05/15/12 | Manny Ramirez | LF | Suspension | 50-game suspension. Eligible to return May 30 at Minnesota |
| 03/13/12 | Brett Anderson | SP | Elbow | 60-day DL. Out until at least early August |
| 03/03/12 | Scott Sizemore | 3B | Knee | 60-day DL. Out for season |
| Philadelphia Phillies | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/11/12 | Justin De Fratus | RP | Elbow | 60-day DL. Out until at least mid-June |
| 05/02/12 | David Herndon | RP | Elbow | 15-day DL. Out until at least late May |
| 05/12/12 | Michael Martinez | 3B | Foot | 60-day DL. Out until at least late May |
| 05/11/12 | Laynce Nix | 1B | Calf | 15-day DL. Out until at least late May |
| 05/02/12 | Jim Thome | 1B | Back | 15-day DL. Out until at least mid-May |
| 05/05/12 | Chase Utley | 2B | Knee | 15-day DL. Out until at least mid-May |
| 05/15/12 | Vance Worley | SP | Arm | Out for May 16 start at Chicago |
| 04/19/12 | Ryan Howard | 1B | Achilles | 15-day DL. Out until at least late May |
| 04/27/12 | Michael Stutes | RP | Shoulder | 15-day DL. Out until at least mid-May |
| Pittsburgh Pirates | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/15/12 | Erik Bedard | SP | Back | Probable for May 16 start at Washington |
| 05/01/12 | Jeff Karstens | SP | Shoulder | 15-day DL. Out until at least mid-June |
| 05/13/12 | Daniel McCutchen | RP | Oblique | 15-day DL. Out until at least late May |
| 04/04/12 | Chris Leroux | RP | Pectoral | 60-day DL. Out until at least early June |
| 02/21/12 | Gustavo Nunez | SS | Ankle | 60-day DL. Out until at least early June |
| San Diego Padres | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/15/12 | Mark Kotsay | LF | Back | Questionable for May 16 vs. L.A. Dodgers |
| 05/01/12 | Dustin Moseley | SP | Shoulder | 60-day DL. Likely out for season |
| 05/02/12 | Kyle Blanks | LF | Shoulder | 60-day DL. Out for season |
| 05/05/12 | Logan Forsythe | 3B | Foot | 60-day DL. Out until at least late June |
| 05/14/12 | Jeremy Hermida | RF | Hip | 15-day DL. Out until at least late June |
| 05/02/12 | Cory Luebke | SP | Elbow | 15-day DL. Out until at least mid-May |
| 05/08/12 | Micah Owings | RP | forearm | 60-day DL. Out until at least mid-May |
| 05/08/12 | Carlos Quentin | LF | Knee | 15-day DL. On Class A rehab assignment |
| 05/05/12 | Huston Street | RP | Shoulder | 15-day DL. Out until at least late May |
| 05/09/12 | Joe Wieland | SP | Elbow | 15-day DL. Out until at least mid-May |
| San Francisco Giants | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/01/12 | Dan Runzler | RP | Side | 15-day DL. Out until at least early May |
| 05/01/12 | Eric Surkamp | SP | Elbow | 15-day DL. Out until at least early May |
| 05/16/12 | Joaquin Arias | SS | Forearm | Questionable for May 16 vs. St. Louis |
| 05/07/12 | Guillermo Mota | RP | Suspension | 100-game suspension. Elgibile to return Aug. 28 at Houston |
| 05/14/12 | Freddy Sanchez | 2B | Shoulder, back | 15-day DL. Out until at least mid-May |
| 05/03/12 | Pablo Sandoval | 3B | Hand | 15-day DL. Out until at least early June |
| 05/12/12 | Ryan Theriot | 2B | Elbow | 15-day DL. Out until at least late May |
| 04/27/12 | Brian Wilson | RP | Elbow | 60-day DL. Out for season |
| Seattle Mariners | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/15/12 | Franklin Gutierrez | CF | Pectoral, foot | 15-day DL. Out until at least late June |
| 05/11/12 | Miguel Olivo | C | Groin | 15-day DL. Out until at least late May |
| 04/29/12 | George Sherrill | RP | Elbow | 15-day DL. Out for season |
| St. Louis Cardinals | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/15/12 | Carlos Beltran | RF | Knee | Questionable for May 16 at San Fracisco |
| 05/12/12 | Chris Carpenter | SP | Neck, Shoulder | 15-day DL. Out until at least late July |
| 05/15/12 | Jon Jay | CF | Shoulder | 15-day DL. Out until at least late May |
| 04/27/12 | Scott Linebrink | RP | Back | 15-day DL. Out until at least early May |
| Tampa Bay Rays | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/10/12 | Brandon Allen | 1B | Quad | 15-day DL. Out until at least late May |
| 05/01/12 | Kyle Farnsworth | RP | Elbow | 60-day DL. Out until at least mid-May |
| 05/14/12 | Desmond Jennings | LF | Knee | 15-day DL. Out until at least late May |
| 05/13/12 | Jose Lobaton | C | Shoulder | 15-day DL. On Class A rehab assignment |
| 05/01/12 | Evan Longoria | 3B | Hamstring | 15-day DL. Out until at least early June |
| 05/15/12 | Jeff Niemann | SP | Foot | 15-day DL. Out until at least late June |
| 04/19/12 | Robinson Chirinos | C | Concussion | 60-day DL. Out until at least early June |
| 04/15/12 | Sam Fuld | LF | Wrist | 60-day DL. Out until at least early August |
| Texas Rangers | |||||
| Updated | Player | Pos | Injury | Expected Return | |
| No injuries reported. | |||||
| Toronto Blue Jays | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 04/08/12 | Jesse Litsch | RP | Shoulder | 15-day DL. Out until at least mid-May |
| 05/14/12 | Dustin McGowan | SP | Foot, shoulder | 15-day DL. Out until at least late May |
| 05/14/12 | Sergio Santos | RP | Shoulder | 15-day DL. Out until at least late May |
| 02/22/12 | Alan Farina | RP | Elbow | 60-day DL. Out until at least early July |
| Washington Nationals | ||||
| Updated | Player | Pos | Injury | Expected Return |
| 05/01/12 | Mark DeRosa | LF | Oblique | 15-day DL. Out until at least early June |
| 05/15/12 | Sandy Leon | C | Ankle | 15-day DL. Out until at least early June |
| 05/14/12 | Brad Lidge | RP | Abdomen | 15-day DL. Out until at least early June |
| 05/10/12 | Chris Marrero | 1B | Hamstring, shoulder | 60-day DL. Out until at least early July |
| 05/01/12 | Michael Morse | LF | Back | 15-day DL. Out until at least early June |
| 05/15/12 | Wilson Ramos | C | Knee | 60-day DL. Likely out for season |
| 05/09/12 | Chien-Ming Wang | SP | Hamstring | 15-day DL. On Triple-A rehab assignment |
| 05/08/12 | Jayson Werth | RF | Wrist | 15-day DL. Out until at least late July |
| 04/03/12 | Cole Kimball | RP | Shoulder | 60-day DL. Out indefinitely |
| 04/11/12 | Drew Storen | RP | Elbow | 15-day DL. Out until at least early July |
| Wed May 16 08:09:37 EDT 2012 |