| A's div. |
| Angels div. |
| Rangers' div. |
| Mariners' div. |
| The Rangers' div. |
| Where Angels play |
| Astros' MLB division |
| L.A. Angels' division |
| The 'Stros joined it in 2013 |
| M.L.B. division that includes the Astros |
| Home to every M.L.B. club whose name starts with "A |