Originally Posted by Vcore89
22 kg is 48.4 lbs. Did I say it varies according to weather conditions; up to 52 lbs? He strings his racquets with the crosses tighter (I did not get it wrong) than the mains, 2 lbs being the normal range.
this video is the proof http://www.youtube.com/watch?v=uQIsp-J71wQ
sorry its german but you can see he is stringing rogers racquet and the camera man asks him what tension he is using and the stringer says "today he wants 20,5 mains and 19 kilos on the crosses"