The Greater Baltimore Tennis Patrons Association, Inc. (BTP), is a local 501(c)(3) tax-exempt non-profit Maryland corporation founded in 1975 to create positive outcomes and benefits for youth and adults through teaching the lifetime sport of tennis, providing opportunities to play and compete, and joining enrichment components with tennis learning and play opportunities. Over the years, BTP has served more than 100,000 juniors, adults, seniors and disabled persons of all ages in more than 70 communities in Baltimore City, Baltimore County, Howard County, Carroll County, Anne Arundel County, Harford County and Frederick County.