Downloadable software or application software for use with computers or smartphones that allows users to schedule practice sessions with ball machines, to access personal statistics related to practicing with ball machines, and/or to program, operate, interface with, and control ball machines during practice sessions; mouse pads; banners for advertising; stickers; backpacks; beverage containers; balls for racquet sports such as tennis, platform tennis, padel, and pickleball; racquets for racquet sports such as tennis, platform tennis, padel, and pickleball; nets for racquet sports such as tennis, platform tennis, padel, and pickleball; clothing; hats; shirts; shorts; jackets; pants; retail store services and online store services featuring an array of goods; Provision of subscription services featuring access to ball machines that throw or launch balls for the purpose of practicing racquet sports such as tennis, platform tennis, padel, and pickleball; Provision of ball machines to country clubs, tennis clubs, park districts, and other similar establishments and organizations, so that members can sign up and practice racquet sports; Providing temporary use of online non-downloadable software that allows users to schedule practice sessions with ball machines, to access personal statistics related to practicing with ball machines, and/or to program, operate, interface with, and control ball machines during practice sessions; Robots as a service (RAAS) services featuring ball machines that throw or launch balls for the purpose of practicing racquet sports such as tennis, platform tennis, padel, and pickleball; Robots as a service (RAAS) services featuring ball machines that throw or launch balls for the purpose of practicing racquet sports such as tennis, platform tennis, padel, and pickleball, with said ball machines having a video feature that allows practice sessions to be recorded, and/or having a voice feature that allows coaches to comment on video summaries, and/or having a statistics feature that allows players to keep track of statistics, such as number of balls thrown, number of sessions played, and numbers of serves received; subscription services; provision of ball machines