Acronym |
Definition |
| 13U | Age thirteen and under |
| 1B | First baseman |
| 1B | First Base |
| 2B | Second baseman |
| 2B | Double |
| 2B | Second Base |
| 3B | Third baseman |
| 3B | Third Base |
| A | Assist |
| AAABA | American Amateur Athletic Baseball Association |
| AAABA | All American Amateur Baseball Association |
| AAB | Adjusted At Bats |
| AABA | All American Baseball Alliance |
| AABA | Alexandria Area Baseball Association |
| AABA | All American Baseball Association |
| AABC | American Amateur Baseball Congress |
| AABP | Anglo American Baseball Project |
| AAGBBL | All American Girls Base Ball League |
| AAGPBL | All American Girls Professional Baseball League |
| AAIPB | American Association of Independent Professional Baseball |
| AB | At Bat |
| ABBA | Amateur Baseball Bond Aruba |
| ABCA | American Baseball Coaches Association |
| ABDG | Amateur Baseball Development Group |
| ABE | Artificial Baseball Engine |
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