- wiki2.org en/Marcos_Alonso_(footballer,_born_1959)Alonso's father, Marcos Alonso Imaz, was also a footballer, who represented Real Madrid in the 1950s and 1960s.
- flashscore.co.uk player/alonso-marcos/MLHPrlrj/Player profile: Marcos Alonso | Flashscore.co.uk website offers transfer history and career statistics of Marcos Alonso (Celta Vigo / Spain).
- efootballdb.com players/profile?id=43157Marcos Alonso is a 33 year old Left-footed LB from Spain who plays for FC Barcelona.
- chelseacore.com marcos-alonso-facts-and-lifestyle/First among the Alonso football generations was Marcos Alonso Imaz, the grandfather of Chelsea’s current defender.
- transfermarkt.co.za marcos-alonso/profil/spieler/…Marcos Alonso, 33, from Spain Celta de Vigo, since 2024 Left-Back Market value: 2,00 mil. €* Dec 28, 1990 in Madrid, Spain.
- rotowire.com soccer/player/marcos-alonso-20821ANALYSIS Alonso will remain in Spain after being let go by Barcelona at the start of the summer, with the defender having linked up with Celta Vigo for the season.
- wikidata.org wiki/Q442838enwiki Marcos Alonso (footballer, born 1990).
- footballtransfers.com en/players/marcos-alonsoMarcos Alonso (ESP) is a a ball playing defender and currently plays for Celta.
- generation95.com why-do-fans-boo-marcos-alonso-…Marcos Alonso is a well-known and highly accomplished football player who currently plays for Chelsea in the Premier League.