The 18-year-old Alcaraz joins Roberto Bautista, Pablo Carreno, Alejandro Davidovich and Marcel Granollers in the Spanish team, with Sergi Bruguera as captain. Madrid: Carlos Alcaraz will play for Spain in the qualifying rounds of the Davis Cup in March but Rafael Nadal was not named in the squad announced by the Spanish tennis federation on Thursday. Nadal will play Matteo …