By Andrew Gastelum La Furia Roja haven’t enjoyed much World Cup success since winning it all in 2010, but promising young stars could be the key to a deep run. For Spain, 2021 was the year of close but no cigar. First came the Euros, where Spain struggled mightily in the group stage until a rollicking 5–0 win over Slovakia in the final group match pushed it through into the knockout stages. From there, Spain squeaked past Croatia and Switzerland before falling to eventual champion Italy on penalties in the semifinals. Then came the UEFA Nations League final in October, where Spain took a secon…