Spain edge the Iberian derby as substitutes settle it late

Spain won a tense, high-quality Iberian derby 1-0 against Portugal at AT&T Stadium in Dallas, a stoppage-time winner from substitute Mikel Merino sending Luis de la Fuente's side into the quarter-finals. It was Spain's first World Cup knockout win since they lifted the trophy in 2010, a result that suggests the tournament favourites are rediscovering their big-game mojo at exactly the right moment. In a cagey, tactical battle between neighbours, the finest margins decided it — and they fell Spain's way.

Match summary: a tactical stalemate broken late

For long periods this was the chess match many expected, two well-drilled sides cancelling each other out with neither goalkeeper seriously tested. Spain enjoyed the greater share of possession, with Lamine Yamal a persistent threat, but Portugal defended with discipline and organisation to keep the game goalless deep into the second half. The breakthrough came deep into stoppage time and from the bench: substitute Mikel Merino settled it in the 91st minute, finishing low and composed past Diogo Costa after fellow substitute Ferran Torres had played him in. It was a contest that had looked destined for extra time, and de la Fuente's changes were vindicated in the most dramatic fashion.

Spain's mojo returns as an era appears to close

For Spain, ending a 16-year wait for a knockout victory is a significant psychological hurdle cleared, and on this evidence they look ready to go deep. A sixth successive clean sheet — a World Cup record, with Unai Simon again untroubled — underlined their balance, and de la Fuente's faith in his squad rather than a settled XI was rewarded. For Portugal, and for Cristiano Ronaldo, it was a subdued farewell. In what is widely expected to be the 41-year-old's final World Cup, Ronaldo was substituted before the finish, unable to summon one last piece of magic, his tournament ending quietly rather than with the fairytale his extraordinary career deserved. He leaves the World Cup stage as one of the game's greatest-ever goalscorers.

Spain to face Belgium in the quarter-finals

Victory sends Spain into a quarter-final against Belgium on July 10 at SoFi Stadium, the European giants meeting with a place in the last four at stake. Spain will start as favourites, but Belgium's own quality will make it a formidable test. Portugal go home, an era seemingly at its end; Spain, growing into the tournament, march on with belief restored.