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troutman · 01-24-2014, 02:22 PM

http://www.physics.usyd.edu.au/~cros...dSlamStats.pdf

1st and 2nd serve speeds, Men's Majors 1999-2009. Seems about 30 km/h less on the second serve.

01-24-2014, 02:22 PM	#441
troutman Unfrozen Caveman Lawyer Join Date: Oct 2002 Location: Crowsnest Pass Exp:	http://www.physics.usyd.edu.au/~cros...dSlamStats.pdf 1st and 2nd serve speeds, Men's Majors 1999-2009. Seems about 30 km/h less on the second serve.