Man U's own goal hands victory to Barcelona
Barcelona will take a 1-0 lead over Manchester United into next week's second leg of their Champions League quarter-final after a 12th-minute Luke Shaw own goal gave them victory at Old Trafford on Wednesday.
Sergio Busquets found Lionel Messi with a clever ball into the area and the Argentine carved out space on the left to deliver a lofted cross to Luis Suarez at the back post.
The Uruguayan's header deflected off the shoulder of a scrambling Shaw and beat David De Gea to give the visitors the lead and although the linesman initially flagged for offside, the goal was given after a VAR video review.
United's best chance of the first half fell to Diogo Dalot but the Portuguese made a mess of a fine Marcus Rashford cross, heading harmlessly across the goal from close-range.
Ole Gunnar Solskjaer's team had struggled to get a foothold in the game during the opening 45 minutes but they were much improved after the break, applying plenty of pressure without creating any clear chances.
Barcelona could have added a second had Suarez not fired into the side-netting from a promising position after a clever through ball from Nelson Semedo.
Barcelona have not lost at home in the Champions League since 2013.
Ronaldo’s 125th Champions League goal
In the other big Champions League match from Wednesday night, Cristiano Ronaldo produced yet another quality goal to add to his collection and help Juventus to a 1-1 draw at Ajax Amsterdam in the first leg of their Champions League quarter-final tie on Wednesday.
Juventus took the lead on the stroke of halftime as Portuguese forward Ronaldo began an attacking move inside his own half before sprinting down field and diving to head in a clever chip from Joao Cancelo.
Ajax equalised 30 seconds into the second half after Cancelo lost control of the ball to allow David Neres to run down the left wing, cut inside and curl the ball past Juve goalkeeper Wojciech Szczesny.
The result leaves the Serie A side in a strong position to advance to the semi-finals in next week's return leg in Turin. However, they will be mindful of Ajax's 4-1 away win over Real Madrid in the last round that eliminated the holders 5-3 on aggregate.
Hakim Ziyech had several efforts at goal in a lively start for the youthful Dutch team, who have come through the pre-group phase qualifying round to reach the last eight.
Donny van de Beek scraped the outside of the upright with a 25th minute effort from close range after opening up space for himself in the penalty area in Ajax's best chance of the first half.
But Juventus, with the 34-year-old Ronaldo central to their attacks, worked their way into the contest and came close themselves when the forward set up Federico Bernardeschi to turn and shoot in the 37th minute. But he was just off target.
Ronaldo, who scored a hat-trick in the previous round against Atletico Madrid, then scored a 125th Champions League goal with the last move of the first half before Ajax opened the second period with the same intensity.
After equalising, Ajax then dominated possession but were guilty of over-elaborate passing and were also fortunate not to have given away a penalty when defender Nicolas Tagliafico was tugging on the jersey of Juventus captain Mario Mandzukic.
Spanish referee Carlos del Cerro Grande paused briefly in the 53rd minute to presumably hear from the Video Assistant Referee (VAR) but resumed play before TV replays showed that Juventus had been denied a decent claim.
However, influential left back Tagliafico will miss the second leg next Tuesday after being booked late in the first half.
Juve hit the upright in the closing stages through substitute Douglas Costa although Ajax could have had the last say as Dusan Tadic missed a good chance in stoppage time.
More than 100 Juventus supporters were detained by Dutch police before the match while home fans were also arrested as a water cannon was used outside the ground.
Daily newsletterReceive essential international news every morningSubscribe