The present disclosure provides a putter head that has a plurality of deflectable beams or projections for striking a golf ball. Upon impact with the ball, the beams deflect and rebound to impart topspin on the ball, thereby resulting in forward rotation of the ball shortly after impact. In certain embodiments, the striking surface of the putter is comprised of a plurality of generally parallel, vertically spaced, deflectable beams extending horizontally across a front surface of the putter. Each beam extends downwardly from a fixed end to a free end that can contact the ball. In one specific implementation, the beams can be formed directly in the front surface of the putter head. In another implementation, the beams are formed in an insert that is mounted to the front surface of the putter head.