Joachim is a tall guy that serves big with a small flexible racquet. He definitely would use the Prestige and RD Mids (If it's a Yonex, it must be a paintjobbed RDX500!). However, he is not a Pro Staff 85 or 90 guy.
Passions are the gales of life. -- Alexander Pope
Tour 89, Vantage 90 & PS90; Alu Pwr @63 lbs., & X-One @68 lbs.