Antonio Sivera

Valencia

Born in Xàbia, Alicante, Valencian Community, Sivera joined Valencia CF's youth setup in 2013 following stints at CD Jávea, Alicante CF and Hércules CF. He made his senior debut on 10 November 2013 at the age of 17, starting for the reserves in a 3–1 Segunda División B away loss against Elche CF Ilicitano. Sivera signed a five-year professional contract with Valencia on 10 February 2015, and was definitely promoted to the B team in May. After spending the 2015–16 season as a backup to Álex Sánchez, he became a regular starter in the following as they reached the promotion play-offs finals.

Alavés

On 19 July 2017, Sivera joined La Liga club Deportivo Alavés on a four-year deal. He made his professional debut on 24 October, in a 1–0 away win over Getafe CF in the fourth round of the Copa del Rey. Sivera's first match in the league took place on 29 April 2018, when he started and was replaced by habitual starter Fernando Pacheco at the hour mark of the 0–1 home loss to Atlético Madrid. On 13 January 2020, he moved to Segunda División side UD Almería on loan until the end of the season. Upon returning, Sivera was again a backup to Pacheco, and only became first choice in 2022 after the latter left. He played all league matches in 2025–26, and in August 2026 renewed his contract until 2030.

Sivera won his first cap for Spain at under-21 level on 1 September 2017, in a 3–0 friendly defeat of Italy held in Toledo. In 2019, he was the starter as the team won the UEFA European Championship for the fifth time.

As of match played 28 August 2026

Spain U19

UEFA European Under-19 Championship: 2015 Spain U21

UEFA European Under-21 Championship: 2019