Golf club head

A golf club head comprising:

• a hosel portion, a heel portion, a sole portion, a toe portion, a crown portion, and a striking face having a striking face surface, and the striking face has a bulge curvature and a roll curvature;
• the striking face having a center face location;
• a center face vertical plane passing through the center face location, the center face vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a center face roll contour;
• a toe side vertical plane being spaced away from the center face vertical plane by 14 mm toward the toe portion, the toe side vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a toe side roll contour;
• a heel side vertical plane being spaced away from the center face vertical plane by 14 mm toward the heel portion, the heel side vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a heel side roll contour;
• a center face horizontal plane passing through the center face location, the center face horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a center face bulge contour;
• a crown side horizontal plane being spaced away from the center face horizontal plane by 7.5 mm toward the crown portion, the crown side horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a crown side bulge contour;
• a sole side horizontal plane being spaced away from the center face horizontal plane by 7.5 mm toward the sole portion, the sole side horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a sole side bulge contour;
• wherein a volume of the golf club head is less than 300 cc;
• wherein the club head has a Zup less than 24 mm;
• and
• wherein the toe side roll contour is more lofted than the center face roll contour, the heel side roll contour is less lofted than the center face roll contour, the crown side bulge contour is more open than the center face bulge contour, and the sole side bulge contour is more closed than the center face bulge contour, wherein an average LA° Δ of an upper toe quadrant is between 0.25° to 2.1°.

A golf club head comprising:

• a hosel portion, a heel portion, a sole portion, a toe portion, a crown portion, and a striking face having a striking face surface, and the striking face has a bulge curvature and a roll curvature;
• the striking face having a center location;
• a center face vertical plane passing through the center face location, the center face vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a center face roll contour;
• a toe side vertical plane being spaced away from the center face vertical plane by 14 mm toward the toe portion, the toe side vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a toe side roll contour;
• a heel side vertical plane being spaced away from the center face vertical plane by 14 mm toward the heel portion, the heel side vertical plane extending from adjacent the crown portion to adjacent the sole portion and intersecting with the striking face surface to define a heel side roll contour;
• a center face horizontal plane passing through the center face location, the center face horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a center face bulge contour;
• a crown side horizontal plane being spaced away from the center face horizontal plane by 7.5 mm toward the crown portion, the crown side horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a crown side bulge contour;
• a sole side horizontal plane being spaced away from the center face horizontal plane by 7.5 mm toward the sole portion, the sole side horizontal plane extending from adjacent the toe portion to adjacent the heel portion and intersecting with the striking face surface to define a sole side bulge contour;
• wherein a volume of the golf club head is less than 300 cc;
• wherein the club head has a Zup less than 24 mm;
• and
• wherein the toe side roll contour is more lofted than the center face roll contour, the heel side roll contour is less lofted than the center face roll contour, the crown side bulge contour is more open than the center face bulge contour, and the sole side bulge contour is more closed than the center face bulge contour, wherein an average FA° Δ of an upper toe quadrant is between 0.08° to 0.7°.