Amusement apparatus and games adapted for use with television receivers or with video or computer monitors; Amusement machines, namely, hand-held electronic game units adapted for use with an external display screen or monitor; Audio and video cassette recorders; Audio and video recordings about tennis; Audio and video recordings featuring computer games; Audio-receivers and video-receivers; Audio-video receivers; Blank magnetic computer tapes; Blank tapes for storage of computer data; Blank ...