Entering its 20th season, the Atlantic League of Professional Baseball (ALPB) offers an open classification of play, the highest level of professional baseball other than Major League Baseball.
Atlantic League players are highly experienced professionals, having progressed through professional baseball developmental levels (A, AA, AAA). More than 40% of Atlantic League players have major league service time. Atlantic League clubs pay players to win baseball games, not apprentice in baseball’s developmental levels.
Over 900 of the league's players have signed contracts with big league organizations and over 100 players have been transferred to Major League Baseball. The league averages more than 50 player contract sales to MLB organizations each year, most recently Rich Hill of the Oakland Athletics. Over 50 former Atlantic League players and coaches are managers or coaches in MLB organizations.
The Atlantic League prides itself on creating fun and affordable family entertainment. Since the league's inception in 1998, more than 38 million fans have attended Atlantic League games in one of the league's state-of-the-art ballparks. In 2016, ALPB became the first independent professional baseball league to sign a working agreement with Major League Baseball. The Atlantic League is the only professional baseball league in an active expansion mode. The league plans to expand from eight to 12 teams over the next few years. The expansion teams will join the existing teams which are currently located in the major metropolitan markets of New York, Philadelphia, Hartford, Baltimore, Washington, and Houston. ALPB clubs have collectively raised millions of dollars for local charities and provide hundreds of jobs and millions of dollars of local economic contribution to each Atlantic League community.
Baseball operations of the Atlantic League were developed by veteran Baseball Executives including Executive Director Joe Klein (former GM of the Texas Rangers, Detroit Tigers, and Cleveland Indians), Bud Harrelson (NY Mets player and manager), Sparky Lyle (NY Yankees) and Brooks Robinson (Hall of Famer and 16-time Gold Glove winner).