Writing the body in motion
The central technical challenge of sports fiction is writing physical experience — the body at its limit, at its best, in competition — in a medium that is not physical. The solution is precision about sensation rather than precision about technique. What does it feel like in the specific muscles when a particular movement succeeds? What is the specific sensory experience of exhaustion, of the moment when form starts to break down, of the surprising ease when everything comes together? Write from inside the body rather than from outside it: use the character's proprioceptive experience, their awareness of their own movement and its quality, to give the reader the embodied sense of athletic performance.