Do It Tennis is a racquet sports retailer based at 2890 S Santa Fe Avenue in San Marcos, California, selling online worldwide through doittennis.com since 2005 with a storefront at its headquarters. Pickleball gear sits alongside the tennis and padel lines: paddles, balls, bags, machines, and court equipment such as nets and posts, from brands including Gamma, Head, Sports Tutor, and Pickle-Ball Inc. The store runs a demo program, offers stringing, and ships free in the US on qualifying orders per its posted policy. Customers rate the San Marcos location 4.0 stars across 145 Google reviews. Retail hours run 8:30 AM to 5 PM weekdays and 10 AM to 3 PM Saturday.