The City of Ballwin and the game of baseball have been synonymous in St. Louis County for the past sixty odd years. From the day the first ball diamond was laid out in the 1920s to today, Ballwin natives have played and watched amateur baseball with enthusiasm.   Ballwin Athletic Association paid $500 an acre for the then 10-acre site. Four years later, lights were added at the ball field making it the first lighted field in St. Louis County.   In 1972, the Ballwin Post 611 American Legion team won the American Legion National Championship.  Baseball has always played a part in Ballwin's community pride and history.  There is a baseball field in the city logo!