1st Serves vs. 2nd Serves.

Ever wondered just how effective a first serve is over a second serve?

To understand the difference in performance between first and second serves, start with the lower number first. So our "base" number is second serve points won, and then we calculate the difference between the 2nd Serve points won and the higher percentage of 1st Serve points won.

Here's an example from the Challenger level.

  • 2nd Serve Win Percentage = 50%
  • 1st Serve Win Percentage = 71%
  • Percentage increase from 50 to 71 = 42%.

Simple, isn't it!

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