League injury log -- N
Regular season -- as of 5/20/2012
| Injuries |
| Date | # | Team | Player | Cause | Dur |
| 4/5/2012 | | Was | Castro | General | 0 |
| 4/6/2012 | | StL | Gutierrez | General | 7 |
| 4/11/2012 | | Was | Mauer | Collision in field | 1 |
| 4/11/2012 | | LAN | Ramirez | General | 0 |
| 4/12/2012 | | Cin | Phillips | General | 0 |
| 4/12/2012 | | Pit | Beckham | General | 0 |
| 4/12/2012 | | Pit | Shields | General | 18 |
| 4/12/2012 | | LAN | Andrus | General | 12 |
| 4/13/2012 | | Phi | Hamels | Hit by pitch | 31 |
| 4/16/2012 | | Phi | Dempster | General | 7 |
| 4/18/2012 | | NYN | Maholm | General | 14 |
| 4/18/2012 | | Hou | Uggla | General | 0 |
| 4/18/2012 | | Mil | Lawrie | General | 4 |
| 4/18/2012 | | Col | Clement | Collision in field | 39 |
| 4/18/2012 | | Col | Altuve | General | 1 |
| 4/18/2012 | | SF | Lewis | General | 20 |
| 4/19/2012 | | Mia | Ogando | General | 7 |
| 4/20/2012 | | NYN | Marquis | Rain delay | 0 |
| 4/20/2012 | | Cin | Buchholz | General | 20 |
| 4/21/2012 | | SD | Cashner | Brawl | 7 |
| 4/22/2012 | | Mia | Feliz | General | 5 |
| 4/23/2012 | | Ari | Tejada | General | 0 |
| 4/24/2012 | | ChN | LeBlanc | General | 8 |
| 4/24/2012 | | Pit | Wells | General | 4 |
| 4/25/2012 | | Col | Villanueva | General | 1 |
| 4/25/2012 | | SD | Downs | Collision on bases | 0 |
| 4/26/2012 | | SF | Beltre | General | 0 |
| 4/27/2012 | | Mil | Barmes | General | 8 |
| 4/27/2012 | | Was | Longoria | General | 11 |
| 4/28/2012 | | Hou | Jaso | Collision in field | 2 |
| 4/29/2012 | | Ari | Bay | General | 4 |
| 4/29/2012 | | SF | Rhodes | General | 9 |
| 4/30/2012 | | Pit | Westbrook | General | 6 |
| 4/30/2012 | | Mia | Joyce | General | 5 |
| 5/1/2012 | | Atl | Jones | General | 0 |
| 5/1/2012 | | NYN | Tomlin | General | 9 |
| 5/1/2012 | | Hou | Swisher | General | 0 |
| 5/1/2012 | | StL | Badenhop | General | 19 |
| 5/2/2012 | | Pit | Torres | General | 0 |
| 5/3/2012 | | Was | Castro | General | 7 |
| 5/4/2012 | | NYN | Hendriks | General | 8 |
| 5/5/2012 | | Atl | Pagan | General | 22 |
| 5/5/2012 | | Mia | Ogando | General | 9 |
| 5/7/2012 | | NYN | Hensley | General | 21 |
| 5/7/2012 | | ChN | Bourgeois | General | 5 |
| 5/7/2012 | | Ari | Span | General | 0 |
| 5/8/2012 | | Phi | Furcal | General | 5 |
| 5/8/2012 | | Hou | Teheran | General | 17 |
| 5/9/2012 | | LAN | Freese | General | 4 |
| 5/9/2012 | | SD | Santiago | General | 13 |
| 5/9/2012 | | SD | Martin | Collision in field | 38 |
| 5/11/2012 | | Mia | Wright | General | 10 |
| 5/11/2012 | | Mil | Wolf | General | 5 |
| 5/12/2012 | | Phi | Ramirez | General | 0 |
| 5/12/2012 | | SD | McPherson | General | 16 |
| 5/12/2012 | | SF | Ellsbury | General | 0 |
| 5/12/2012 | | Col | Betancourt | General | 1 |
| 5/13/2012 | | Ari | Pestano | General | 15 |
| 5/13/2012 | | Col | Altuve | General | 0 |
| 5/14/2012 | | Mia | Figgins | General | 0 |
| 5/14/2012 | | Ari | Romero | General | 11 |
| 5/14/2012 | | Col | Gee | General | 14 |
| 5/15/2012 | | Cin | Buchholz | General | 16 |
| 5/15/2012 | | Hou | Swisher | General | 6 |
| 5/15/2012 | | SD | Gardner | General | 5 |
| 5/15/2012 | | ChN | LeBlanc | General | 8 |
| 5/17/2012 | | Was | Coffey | Brawl | 31 |
| 5/18/2012 | | Mia | McCarthy | General | 24 |
| 5/18/2012 | | LAN | Perry | General | 0 |
| 5/19/2012 | | Pit | Thayer | General | 1 |
| 5/19/2012 | | Pit | Camp | General | 2 |
| 5/19/2012 | | Phi | Floyd | General | 7 |
| 5/20/2012 | | Pit | Lowrie | Collision on bases | 0 |
| 5/20/2012 | | Hou | Rollins | General | 5 |
| 5/20/2012 | | SF | Belisle | General | 0 |