The crossword solution for the term 'ZERO, TO NADAL' is 'LOVE'. This is a reference to the famous Spanish tennis player Rafael Nadal, who is known for his passionate and intense playing style. He often wears a shirt with the word 'LOVE' written on it, which is a reminder of his commitment to the game. The term 'zero, to Nadal' is a reminder that no matter how hard he plays, he always puts LOVE into his game.