Spain's Carlos Alcaraz said playing in Rafa Nadal's career farewell in the Davis Cup Final Eight will be the most special event he will play in his career.

Carlos Alcaraz says winning next week's Davis Cup for Rafael Nadal is a "huge motivation" and will mark the "most special" tournament of his career.

Rafael Nadal admitted Saturday that he may be forced to sit out the singles at the Davis Cup Finals where the Spanish superstar will call time on his iconic, record-setting career.