Wilson ProStaff 6.0 Question [Archive]

prestige_player

03-11-2009, 06:33 PM

What is the difference between a ProStaff 6.0 and a ProStaff 6.0 si?

sunflowerhx

03-11-2009, 09:15 PM

Nothing the s.i. stands for swing index and appears on some batches of the PS6.0