Marcos Alonso comes from a footballing family: his grandfather Marcos Alonso Imaz and father Marcos Alonso PeΓ±a both played for Spain. He came through Real Madrid’s academy and moved to Bolton Wanderers in 2010.
After spells at Fiorentina and on loan at Sunderland, Chelsea signed him in 2016, and he won the Premier League in his first season, the FA Cup and the 2021 Champions League. He then returned to Spain with Barcelona, winning La Liga in 2022/23, before joining Celta Vigo.
Alonso is a left-footed wing-back known for his crossing, free kicks and goals from defence. He has been capped by Spain.
Career in numbers
Alonso’s senior club career, which began in 2009/10, has so far brought 491 appearances and 47 goals for 7 clubs. His most productive season in front of goal was 2017/18, when he scored 8 times in 46 games for Chelsea. His busiest campaign was 2021/22, with 46 appearances. So far in 2026/27 he has made 6 appearances for Celta. The full season-by-season record is in the Stats section of this profile.