An omnidirectional system (1) is described, for expelling and collecting balls, adapted to reproduce a real playing and/or training dynamics, such system (1) being equipped with at least one closing element (8) connected to at least one expelling device (2) of the system (1) arranged orthogonal to the expelling device (2) when expelling at least one ball from the system (1), the ball bouncing on an upper surface of the closing element (8) going towards at least one user; and with at least one net element (7) of at least one collecting element (3) of the system (1).