This is the quintessential Wilson player stick ... lower section of the “W” stencil on the strings, which marks the racquet’s sweet spot. Bottom Line: For aggressive, high-level baseliners ...

The most demanding of the Clash line undergoes a slight change in specs to deliver a supremely user-friendly and enjoyable playing experience.

Roger Federer's Wilson racket from the 2011 Roland Garros final ... The racket includes a signature from the Swiss tennis maestro. Roger Federer played Rafael Nadal in the 2011 French Open final.

Goldin Auctions is offering the racket at auction through Saturday. Bidding was up to $18,000 as of Saturday afternoon. The Wilson Six One Tour racket features Federer's signature on the handle.