Carlos Alcaraz: Behind the smile

This is a deeply researched biography of the new face of tennis. A man who, at a tender age has achieved more than the stars of the previous generation did at his age. At just 19 years of age, Carlos Alcaraz won the US Open and became the world's youngest number one in the game. At only 21 he had four Grand Slam titles.

For Carlos Alcaraz, everything - from his charm to his star power to his tennis mojo - starts with a smile. It's a performance free of cynicism and radiating happiness.

But does the smile mask a more complex character? One who grew up in humble circumstances in a small village in Murcia. A man with strong family traditions who has a tattoo of his grandfather's favourite saying - 'Cabeza Corazon y cojones (brain, heart and balls) - inked on his left wrist. Mark Hodgkinson talks to those who know him best - including his coaches, family friends, old teachers, and competitors - to provide a fascinating insight into the spartan showman of tennis and a GOAT in waiting.