With the new Wilson Pro Staff 97 Roger Federer Autograph racquet out and selling like hotcakes, it was high time that one of the all-time greats of women’s tennis, Serena Williams, also get an autograph model. It’s called the Wilson Blade SW104 Autograph Countervail and absolutely murders the tennis ball. Just look at the specs: Technical Specifications Length 28 in 71 cm Head Size 104 sq in 671 sq cm Weight 11.4 oz 323 gm Balance Point 13.4 in 34 cm 5pts Head Light Construction 22mm Straight Beam Composition Countervail/ Graphite String Pattern 18 Mains / 19 Crosses Babolat RDC Ratings Score Grade Flex …
