Mikel Merino scored in the 88th minute on a rebound yielded by backup Belgium goalkeeper Senne Lammens, and Spain advanced to the World Cup semifinals with a 2-1 victory.

Belgium blew out the United States 5-2 in a World Cup warmup that exposed the Americans’ defensive difficulties, rallying from a late first-half deficit on two goals by Dodi Lukébakio and one each from Zeno Debast, Amadou Onana and Charles De Ketelaere.

In his 1000th game as a manager, Pep Guardiola celebrated victory as if it was his first.