De la Fuente has made a big change from the team that came up short against Cape Verde, with Pedro Porro coming in at the back and Alex Baena starting in midfield.
Meanwhile, Saudi Arabia boss Georgios Donis has made two smart tweaks to the team that played Uruguay. Ali Lajami comes into defence, while Nasser Al-Dawsari receives a header in midfield.
Spain Starting XI (4-2-3-1): Goalkeeper: Unai Simón
Defenders: Pedro Porro, Pau Cubarsí, Aymeric Laporte, Marc Cucurella
Defenders: Rodri, Pedri
Attacking Midfielders: Álex Baena, Lamine Yamal, Dani Olmo
Forward: Mikel Oyarzabal
Spain players: David Raya (GK), Joan García (GK), Marc Pubill, Alejandro Grimaldo, Eric García, Marcos Llorente, Mikel Merino, Fabián Ruiz, Gavi, Nico Williams, Martín Zubimendi, Ferran Torres, Yéremy Pino, Víctor Muzglesi, Víctor Muzglesi.
Saudi Arabia Starting XI (5-3-2): Goalkeeper: Mohammed Al-Owais
Defenders: Saud Abdulhamid, Hassan Al-Tambakti, Ali Lajami, Abdulelah Al-Amri, Moteb Al-Harbi
Midfielders: Nasser Al-Dawsari, Abdullah Al-Khaibari, Musab Al-Juwayr
Directors: Firas Al-Buraikan, Salem Al-Dawsari (C)
Saudi Arabia Substitutes: Nawaf Al-Aqidi (GK), Ahmed Al-Kassar (GK), Ali Majrashi, Hassan Kadesh, Nawaf Boushal, Jehad Thakri, Mohammed Abu Al-Shamat, Mohamed Kanno, Ziyad Al-Johani, Alaa Hejji, Ayman Yahya, Khalid Al-Haleh Al-Ghannam, Abdul-Sheri Al-Ghannam Sultan Mandash.