| Name | Address | Games | Actions |
|---|---|---|---|
| Oklahoma State University | Stillwater, OK | 5 | |
| Olympic Park | 1675 E. Old Schaumburg Rd, Schaumburg, IL, 60159 | 3 | |
| Oregon | 18th Agate Alley, Eugene, OR, 97403 | 6 | |
| Oregon State University | Student Legacy Park, Corvallis, OR, 97331 | 5 | |
| O'Shaughnessy Stadium | 2115 Summit Ave, St. Paul, MN, 55105 | 2 | |
| Pacific | Stockton, CA | 4 | |
| Palm Beach Atlantic | Rinker Athletic Campus, West Palm Beach, FL, 33405 | 11 | |
| Pan-American Stadium | 1 Zachary Taylor Dr, New Orleans, LA, 70003 | 2 | |
| Parkway West Middle School | 2312 Baxter Rd, Chesterfield, MO, 63017 | 1 | |
| Parsons Field | 178 Kent St, Brookline, MA, 02446 | 5 |