Instructional baseball and softball leagues for children aged 4-14 in the area surrounding Oz Park in the Lincoln Park neighborhood of Chicago, IL. This 501(c)3 non-profit organization is a fully self-managed, volunteer driven entity. Founded in 2009, the OPBA began play in 2010. Currently, spanning all House and All-Star teams, there will be 1250 kids, 105 teams, and nearly 500 coaches supporting the kids' desire to play ball.