what is federers actual string tension that he uses? On the inside of the RF97, it says gut at 59lbs and ALU Power at 56lbs, but in this website http://www.colinthestringer.com/pros-strings/ it said he used gut at 48.5 lbs and ALU power at 45lbs at the 2015 Aussie open. I understand he uses diffent tensions for different climates and surfaces, but surely it's not that big of a range.
↧