With an eye on the Davis Cup, Rafael Nadal said he was pleased with his performance despite losing 6-3, 6-3 to Carlos Alcaraz at the Six Kings Slam on Thursday. Jannik Sinner beat Novak Djokovic 6-2, 6-7 (0), 6-4 in the other semifinal at the exhibition event that awards money but no ATP ranking points and is Saudi Arabia’s latest foray into tennis. The match against Alcaraz was Nadal’s first since he announced last week that he would be retiring after playing for Spain in the Davis Cup next month.