Croatia locked up its spot in the World Cup Round of 16 on Thursday, thanks in part to a stunning mistake by Argentine goalkeeper Willy Caballero in the 53rd minute. In an attempt to pass the ball to his own defender, Caballero gave it straight to Croatia's Ante Rebić, who put the ball right back into the net. "It's a howler, an absolute howler, on the biggest stage," the Fox Sports announcer groaned. Yiiiiiikes.