The Twelfth Player

Titan, 2230. In the 89th minute of her captain's farewell match, Niya Kovach scores. That same night the seam of an airlock sleeve tears, and she loses her right leg below the knee.

Twenty-five days later the Origin registry strikes her from the league. No hearing, no signature, nobody to argue with: Rule 7.1 says a player of the Origin league competes with the body given to them at birth — fourteen words, and she counts them out loud. A machine enforces it. The machine takes eleven minutes.

Her prosthesis weighs forty grams less than the leg she was born with. That weighing certificate will be entered as evidence — by both sides.

What follows is two years of Kovach v. the Origin Registry before the Chamber of Sport of the Solar System, whose senior arbiter is a two-hundred-and-forty-five-year-old lawyer with prosthetic knees of his own — and therefore with a reason to be challenged off the case.

Titan is not Earth. At a seventh of Earth's gravity, in air four times denser than sea level, a ball has a ceiling it cannot cross and a body has to be relearned from the first step. Book Three asks what the trilogy has been building toward for two centuries: why stay human once it stops being the efficient thing to be. Sport is the last thing we have left that cannot be optimized — and passion feeds on being mortal.