Golf club assembly and golf club with aerodynamic features

A golf club head comprising:

• a body member having a ball striking face, an upper surface, a toe, a heel, and a lower surface;
• a primary recess formed in the lower surface;
• and
• two or more secondary recesses formed in a bottom surface of the primary recess, each secondary recess having a first base and a second base, wherein the secondary recesses are arranged in a series such that a second base of a first secondary recess lies adjacent to a first base of an adjacent second secondary recess.

A golf club head comprising:

• a body member having a ball striking face, an upper surface, a toe, a heel, and a lower surface;
• a primary recess formed in the lower surface, wherein a first end of the primary recess is closer to the striking face than a second end of the primary recess;
• and
• three secondary recesses formed in a bottom surface of the primary recess, each secondary recess having a first base and a second base, wherein the secondary recesses extend in a direction from the first end of the primary recess to the second end of the primary recess, wherein a second base of a first secondary recess lies adjacent to a first base of an adjacent second secondary recess and a second base of a second secondary recess lies adjacent to a first base of an adjacent third secondary recess.