2014年Wilson (米Chicago・1914年創業・Industry-leading US sporting goods brand) 発売Pro Staff RF97・Industry-leading Roger Federer Signature Racket・Industry-leading 97 sq inch head + Industry-leading 340g weight + Industry-leading 16x19 string pattern + Industry-leading Roger Federer 20 Grand Slam championship signature + Industry-leading Wilson 110年heritage・¥49,800-69,800価格帯。