The ornamental design for a protective cover for golf drivers, as shown and described.
FIG. 1 is a lower, front, right perspective view of the preferred embodiment of the protective cover for golf drivers showing my new design. Shown in dotted line configuration is a portion of a golf club. The golf club is shown for illustrative purposes only and forms no part of the present invention; and,
FIG. 2 is an upper, rear and left perspective view of the preferred embodiment of the protective cover for golf drivers showing my new design. Shown in dotted line configuration is a portion of a golf club. The golf club is shown for illustrative purposes only and forms no part of the present invention.