THE FEUTEX TOOLKIT

Tennis Service Point Profile

Combine first-serve frequency with first- and second-serve points won.

Sports workspace● Runs in your browser

01 Your input

First in%First won%Second won%Pointspoints

02 Your result

View or copy raw result data

Result data

Formula

Win rate = first_in*first_won/100+(100-first_in)*second_won/100; Expected won = points*(first_in*first_won+(100-first_in)*second_won)/10000

Made for real tasks

Combine first-serve frequency with first- and second-serve points won.
Compare two scenarios by changing the inputs and rerunning the tool.

Explore step-by-step workflows →

Worked example

Inputs

First in: 60 %
First won: 75 %
Second won: 50 %
Points: 80 points

Expected results

Win rate: 65 %
Expected won: 52 points

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

Enter first in, first won, second won, points.
Use consistent units shown beside each input. Run the calculation and review the assumptions below.

Try this example

{
  "first_in": 60,
  "first_won": 75,
  "second_won": 50,
  "points": 80
}

Accuracy and scope

First-serve-in percentage weights first-serve win rate; every remaining point uses second-serve win rate, which must already include double faults. It is a point-level expectation, not game or match win probability.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.