Acronym |
Definition |
| WWUA | Wounded Warrior Umpire Academy |
| WYB | Westmont Youth Baseball |
| WYB | Washington Youth Baseball |
| WYBA | Westmont Youth Baseball Association |
| WYBI | Wooster Youth Baseball Inc |
| XBH | Extra Base Hits |
| YABB | Youth Aluminum Baseball Bat |
| YAZ | Carl Yastrimsky |
| YB | Youth Baseball |
| YBA | Youth Baseball Association |
| YBB | Youth Baseball Bat |
| YBC | Ypsilanti Baseball Club |
| YBL | Yawkey Baseball League |
| YBS | Youth Baseball School |
| YLT | Yo La Tengo (baseball: I have it) |
| ZBC | Zionsville Baseball Club |
| ZLL | Zionsville Little League |
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