June 30 (Reuters) - Spain march into their World Cup last-32 clash against Austria on the back of an unbeaten run of 34 matches, a defence yet to be breached and an old question still nagging away - what happens when all that possession runs into a locked door?
Luis de la Fuente's European champions face Ralf Rangnick's Austria, who are making their first World Cup knockout appearance in 44 years after finishing runners-up in Group J, with Spain carrying momentum and a mild tactical headache.
The Spaniards topped Group H with two wins and a draw, taking seven points from nine, after Friday's bruising 1-0 win over Uruguay. It was progress, certainly, but not perfection.
Spain have looked secure at the back, with goalkeeper Unai Simon having gone 429 minutes without conceding at the World Cup. Yet their opening 0-0 draw against Cape Verde in Atlanta offered an early warning that control alone may not be enough.
Against one of the tournament's debutants, Spain had 74% possession and 27 shots, but only seven were on target. Cape Verde sat deep, kept their lines tight and invited Spain to solve a puzzle with precious few gaps. The Spaniards could not.
For Spain, the sight was uncomfortably familiar. Their 2022 World Cup campaign ended on penalties after a 0-0 draw against Morocco, another match in which possession did not bring goals.
With their talented, speedy wingers Lamine Yamal and Nico Williams arriving at the World Cup nursing hamstring injuries sustained in April, De la Fuente started Gavi and Ferran Torres on the flanks against Cape Verde, but the lack of width slowed Spain's circulation and made their attacks predictable.
They attempted 39 crosses in that match and completed only eight as they moved the ball neatly between defence and midfield but struggled to penetrate the final third.
They responded with a convincing 4-0 win over Saudi Arabia but Uruguay brought a different sort of discomfort.
Marcelo Bielsa's side turned that match into a physical examination, leaving Spain with injury concerns over Williams and Yeremy Pino. Williams felt discomfort in his right leg, while Pino suffered a shoulder injury.
Although initial fears were more serious, both diagnoses offered some encouragement, with the pair potentially available again if Spain reach the quarter-finals.
Austria are expected to use similar tactics, deploying a low block and daring Spain to break the deadlock. But they are unlikely to merely admire Spain's passing carousel.
Rangnick's side have already made history by reaching the knockouts, but Spain's task is clear: keep the clean-sheet streak alive and prove they can unpick a defensive lock.
(Reporting by Fernando Kallas' Editing by Ken Ferris)
