A system (234, 220, 200) for monitoring movements of one or more users and/or one or more projectiles during sports activities performed by the one or more users is provided. The one or more projectiles (200) incorporate sensors (202, 204) for sensing movements of the one or more projectiles (200) during the sports activities. A user interface (220) is used for presenting automated sports training services. A data processing arrangement (234, 232, 220) is used for analysing one or more records of the movements of the one or more projectiles (200) against reference data, for providing the automated sports training services to the one or more users via the user interface (220).