How they qualified: Booked their place in Brazil with two games to spare, finishing second behind the USA. Were solid enough at the back, conceding just seven goals in the final group phase.
World Cup pedigree: Average at best. Failed to get out of their group in 2002 and 2006. Their stand-out performance came at Italia '90, where they took advantage of Mexico's suspension and then beat both Sweden and Scotland to reach the Round of 16 before falling to Czechoslovakia.
Main man: Bryan Ruiz. The Fulham striker, who captains his country, is near-unplayable on his day – unfortunately his day comes far too infrequently.
One to watch: Joel Campbell. The 21-year-old Arsenal striker, currently on loan to Olympiakos, is excellent with the ball at his feet. If he gets his head up and improves his awareness he could have a decent tournament.
What are their chances? Outsiders. They might not concede many goals, mainly down to excellent goalkeeper Keylor Navas, but scoring could prove problematic. Will do extremely well to get out of Group D.
Costa Rica's squad
Goalkeepers: Keylor Navas, Patrick Pemberton, Daniel Cambronero, Esteban Alvarado
Defenders: Johnny Acosta, Giancarlo Gonzalez, Michael Umana, Oscar Duarte, Waylon Francis, Heiner Mora, Junior Diaz, Christian Gamboa, Roy Miller, Kendall Waston
Midfielders: Celso Borges, Christian Bolanos, Esteban Granados, Michael Barrantes, Yeltsin Tejeda, Diego Calvo, Jose Miguel Cubero, Carlos Hernandez, Ariel Rodriguez, Hansell Arauz
Forwards: Alvaro Saborio, Bryan Ruiz, Joel Campbell, Randall Brenes, Marco Urena, Jairo Arrieta