Play 69 · Track 07 · Know the game · 6 min
Read the lines.
Read the angles.
Every line has a job, and the markings hide a geometry that governs every shot. Read the court and you read the angles.
01
Tap any line and get its name, its dimension and the rule it enforces
02
Singles to doubles in one toggle, and when the alleys count
03
Why the net sags 15 cm and what that does to cross-court
04
A watching task: name the line and its rule before the replay
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The reference chapter behind it is mapped and researched. It ships as a play with a drill and a number to beat. Get an email when it does.