A putter head, comprising: a putter body including a top surface, a bottom surface, a rear surface, and a front face, the putter body including an aperture extending through the putter body from the front face to the rear surface; and a ball striking surface insert received in the aperture of the putter body and engaged with the putter body, the ball striking surface insert including: a first surface plate formed of a first material, the first surface plate having a plurality of grooves formed therein, a second surface plate formed of a second material which may be the same as or different from the first material, the second surface plate having a plurality of grooves formed therein, and a first fill material provided between the first surface plate and the second surface plate, wherein a portion of the first fill material is exposed through the grooves of the first surface plate, wherein the first surface plate, the second surface plate, and the first fill material are engageable with the putter body such that (a) in a first configuration, the first surface plate forms a first side of the ball striking surface insert visible on the front face of the putter body and the second surface plate forms a second side of the ball striking surface insert visible on the rear surface of the putter body, and (b) in a second configuration, the second surface plate forms the first side of the ball striking surface insert visible on the front face of the putter body and the first surface plate forms the second side of the ball striking surface insert visible on the rear surface of the putter body, and wherein the ball striking surface insert is releasably engaged with the putter body to allow user selection between the first configuration and the second configuration, and wherein the putter head has different performance characteristics in the first configuration as compared to the second configuration. a putter body including a top surface, a bottom surface, a rear surface, and a front face, the putter body including an aperture extending through the putter body from the front face to the rear surface; and a ball striking surface insert received in the aperture of the putter body and engaged with the putter body, the ball striking surface insert including: a first surface plate formed of a first material, the first surface plate having a plurality of grooves formed therein, a second surface plate formed of a second material which may be the same as or different from the first material, the second surface plate having a plurality of grooves formed therein, and a first fill material provided between the first surface plate and the second surface plate, wherein a portion of the first fill material is exposed through the grooves of the first surface plate, wherein the first surface plate, the second surface plate, and the first fill material are engageable with the putter body such that (a) in a first configuration, the first surface plate forms a first side of the ball striking surface insert visible on the front face of the putter body and the second surface plate forms a second side of the ball striking surface insert visible on the rear surface of the putter body, and (b) in a second configuration, the second surface plate forms the first side of the ball striking surface insert visible on the front face of the putter body and the first surface plate forms the second side of the ball striking surface insert visible on the rear surface of the putter body, and a first surface plate formed of a first material, the first surface plate having a plurality of grooves formed therein, a second surface plate formed of a second material which may be the same as or different from the first material, the second surface plate having a plurality of grooves formed therein, and a first fill material provided between the first surface plate and the second surface plate, wherein a portion of the first fill material is exposed through the grooves of the first surface plate, wherein the first surface plate, the second surface plate, and the first fill material are engageable with the putter body such that (a) in a first configuration, the first surface plate forms a first side of the ball striking surface insert visible on the front face of the putter body and the second surface plate forms a second side of the ball striking surface insert visible on the rear surface of the putter body, and (b) in a second configuration, the second surface plate forms the first side of the ball striking surface insert visible on the front face of the putter body and the first surface plate forms the second side of the ball striking surface insert visible on the rear surface of the putter body, and