Question: What position did Sergio Perez Leyva, a Spanish player, play that is the world's most popular sport played by 250 million players in over 200 countries?
Sentence (from "Sergio Pérez Leyva"): Sergio Pérez Leyva (born 15 May 1993) is a Spanish footballer who plays for CD Mirandés as a goalkeeper.
Relevant evidence: Yes