Rafael Nadal admitted his fitness level was well off the tour's top players after falling Thursday in straight sets to fellow Spaniard Carlos Alcaraz, who described the exhibition match as "a little bit sad".

Competing for the first time since the Olympic Games, Rafael Nadal faced world no. 2 Carlos Alcaraz in the semi-final of the Six Kings Slam in Riyadh. As was expected, the younger Spaniard scored a 6-3, 6-3 victory in under 80 minutes, arranging the title clash versus world no.

Carlos Alcaraz sent an emotional message to Rafael Nadal after beating him in their final singles match on October 17, Thursday. Nadal will retire from tennis after the Davis Cup.