A combination ball clip and ball liner includes a ball liner for marking a club head guideline, a directional guide line and a 360.degree. horizontal guideline on a golf ball, and a ball clip for holding down a golf ball in the ball liner for marking guidelines. The ball clip includes a hollow mounting block fastened to the ball liner, a smoothly arched clip body pivoted to the hollow mounting block, and an elastic member mounted in the hollow mounting block to bias the smoothly arched clip body, holding the smoothly arched clip body in the ball-holding position.