The Pro Staff 97RF is Roger Federer’s signature playing model and certainly the most difficult racket to play with in the line. It is intended for two groups of players. The first includes extremely high-level players, i.e., college- or tour-level. These players will enjoy the precision, control, and plow through they find with the RF97’s small head size (97”), heavy weight (12.0oz unstrung), and head-light balance (12pts HL).