Grand Slam USA

As the longest standing and most experienced batting cage business in the Baltimore area, Grand Slam USA is dedicated to ensure that all of our customers achieve two things:

1. Enjoy the sports activities which they participate in at Grand Slam.

2. Use our facility and our professional staff to improve their performance in the sports that they love.

Our Business is to close the gap between potential and performance. Let us help you be the kind of player you would like to be. We have the facility and the training staff that can help you achieve your goals.

Who We Are

BILL GREENWELL  Owner and academy director. Former collegiate player, major league scout, college, high school, and youth coach. Bill's baseball and teaching background has enabled him to work effectively with players young and old, beginners to professionals.

BILLY GREENWELL  Five year pro player, division II college all american, three time all county selection, college head coach, high school and youth coach. Staff member at Grand Slam for fifteen years.

STONEY BRIGGS  Fifteen year pro player.  High draft pick of the San Diego Padres. College and all-state player. Successful youth coach. Grand Slam staff member for seven years.

JON KIBLER  Currently pitching in the Detroit Tigers organization. Was the Tigers minor league pitcher of the year in 2008. Pitched at Michigan State and Calvert Hall.