The specs at Gregg Raven's HD Tennis site for Sampras are 384 g, 32.1 cm, and 367 kg•cm^2. Assuming those are strung specs, that would give a polarization index (recoil weight divided by mass) of 0.467, which isn't remarkable either way for stock racquets (the average for the 1200+ racquets on the spreadsheet in front of me is 0.464) and is less polarized than almost all of the pro specs I've run across (the average for 17 ATP players at the 2009 BNP Paribas Open was 0.52).
If you use the specs from the 1993 ATP World Championship in Frankfurt (don't remember where I got them, but they are 390 g, 32.3 cm, 379 kg•cm^2), it comes to 0.475.
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Last edited by Don't Let It Bounce : 11-17-2010 at 02:48 PM.