Tubular steel racquet frame having varying cross-section

A racquet having a head and a handle comprising:

• a continuous tubular steel frame having, in cross-section, a generally four sided configuration that is symmetrical about its minor axis, the four sides of said frame comprising first and second long sides which are opposite each other, two short sides which are opposite each other, and convex rounded corners connecting adjacent sides, a cross-section of said frame having a width of about 0.279 to 0.307 inch at its widest point, a height of about 0.490 to 0.510 inch, the first long side having a concave arc with a radius of about 0.118 to 0.126 inch from a point about 0.080 to 0.090 inch away from said frame's widest point along the axis of symmetry, the second long side having an arc with a radius of about 0.260 to 0.355 inch from a point about 0.215 to 0.325 inch away from said frame's widest point along said axis of symmetry, both short sides being connected to said first long side via convex rounded corners having a radius of about 0.118 to 0.128 inch from a point inside said tube frame about 0.122 to 0.132 inch from said axis of symmetry in a direction toward the respective rounded corner and about 0.118 to 0.128 inch from the widest point of said first long side, both short sides being connected to said second long side via convex rounded corners having a radius of about 0.070 to 0.110 inch from a point inside said tube frame about 0.150 to 0.178 inch from said axis of symmetry in a direction toward the respective rounded corner and about 0.070 to 0.100 inch from the widest point of said second long side.