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Old 05-27-2011, 01:33 AM   #23
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Join Date: Aug 2009
Location: Gliwice, Poland
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Comparing success on first and on second serve we have to bear in mind that samples sizes should be more or less the same (that is the number of first/second serves successfully executed during a match). Usually this is the case however sometimes (as Wilander Leconte, FO 198, players may have unusually high percentage of first serves in (Wilander 97%), which implies that the number of second serves executed was very small (2), and calculated success on second serve (50% in this case) is not very informative. Of course in that match Wilander success on first serve was higher that on the second serve.
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