Iker Casillas Fernández is a Spanish retired professional footballer who played as a goalkeeper. Popularly dubbed "San Iker" ("Saint Iker") for his ability to produce spectacular saves, Casillas is widely considered to be one of the greatest goalkeepers of all time. He is known for his athleticism, quick reactions and outstanding shot-stopping ability. Having spent the majority of his career at Real Madrid, Casillas is one of the few players to achieve over 1000 professional career matches, and holds the record for the most clean sheets in the UEFA Champions League, as well as for the Spain national team.