Where to now for Spain? Before the tournament, pundits fell into two camps: one feeling that tiki-taka passing, and these individual players, weren't quite the thing any more in 2014; the other confidently stating that Spain still had all the old qualities and, in Diego Costa, a lethal striker removing the need to waft about with a "false nine" up front.Nobody predicted the collapse suffered last Friday, when Spain were roundly hammered 5-1 by the Netherlands. Cosily paternal coach Vicente del Bosque has tough decisions to make. Stick with Iker Casillas, who was at fault for probably one and a half Dutch goals, or play Pepe Reina? (David de Gea isn't fit.) Stick with Costa, who won the penalty for Spain's goal against Holland but made his team attempt a slightly uncomfortable change of style, or try Cesc Fabregas?Reports suggest del Bosque might also replace Xavi with hot Atletico Madrid midfielder Koke, and David Silva with the nippy, penetrative Pedro. Spain's real problem in their first match, however, was at the back, where Sergio Ramos and Gerard Pique were horribly vulnerable to balls over the top. Javi Martinez might come in for Pique to try to make the back line more circumspect.Absolutely the last team you want to be facing in a crisis is Chile. They looked like the most exciting team in world football for 20 minutes against Australia, quickly going 2-0 up with their fast, fluid attacks. After that they lost their way but having conceded, they closed a frantic game out reasonably convincingly and will be relishing this fixture.The star man is Alexis Sanchez, who knows what he's dealing with here since he plays his club football, very successfully, for Barcelona. He and his striking colleague, Valencia's Eduardo Vargas, will have been drooling with anticipation as they watched Arjen Robben repeatedly sprint past the Spanish defence.The key, however, might be Juventus attacking midfielder Arturo Vidal, who's recovering from knee surgery performed in May and lasted for an hour against Australia. Vargas and Sanchez both like to make runs out wide; Vidal, or his understudy Jorge Valdivia, will burst forward down the middle, completing a triple threat the nervous Spaniards might find hard to resist.