Abstract: A post for supporting tennis nets, volley ball nets and other nets of similar purpose that provides a maximum safety advantage to the players of said games, yet offering a device of strict simplicity comprising a minimum of movable parts and which strongly resists bending or breakage under high tension, shear, or compression loadings. The game net support post is telescopically insertable and removably placed in a support surface socket, the post being substantially rectangular in cross-section. Placed near the lower end of the post is a transverse bolt for limiting downward movement of the post within the socket. The upper end of the post is provided with a transverse recessed trough. The trough is extended across the upper horizontal surface and a short distance down one of the sides of the post. Attached to the side of the post is an elongated turnbuckle. The turnbuckle has one of its ends attached to the side of the post on which the trough extends.