Emma Hayes had mixed feelings despite seeing Chelsea condemn holders Barcelona to a first home defeat for five years and edge closer to the Champions League final.

Erin Cuthbert’s first-half goal clinched a precious 1-0 semi-final first-leg win at the Estadi Olimpic Lluis Companys to set the Women’s Super League leaders up perfectly for the return at Stamford Bridge next Saturday.

It was a first competitive victory for the Blues over Barca, who knocked them out at the same stage last season on their way to a second European title, and came courtesy of a superb defensive effort – but boss Hayes was left wondering what might have been.

She told DAZN: “It’s just half-time. Nobody should get carried away with that and to be honest, I’m disappointed we didn’t get the second goal.

“It’s a difficult place to come and they carried out the game plan I asked them to do – so from that perspective, I’m happy.”

The Blues had to soak up early pressure but did so to such effect that Barca did not muster a single shot on target during a tense encounter.

Cuthbert’s 40th-minute strike gave the visitors the lead and, having seen French referee Stephanie Frappart reverse her decision to award a penalty against Kadeisha Buchanan for handball after the break, they might have increased their advantage.

Salma Paralluelo and substitute Alexia Putellas could have salvaged a draw amid a late flurry but Chelsea held firm.

Hayes is well aware of the threat Barcelona will pose in the second leg.

Hayes said: “I think I know how to come away from home and get a result. We have under-performed against Barcelona at home.

“Barcelona have another level in them and I think that’s clear. Maybe they don’t feel they were at their best today and we have to anticipate that.”

Joao Felix’s overhead kick sealed Barcelona a 1-0 win at lowly Cadiz and lifted his side back to within eight points of LaLiga leaders Real Madrid.

The Portugal forward converted with a bicycle kick following a first-half corner and with the help of two crucial saves from goalkeeper Marc-Andre ter Stegen, Barca extended their winning run in all competitions to six matches.

Barca, who edged the first leg of their Champions League quarter-final 3-2 against Paris St Germain in midweek, are now unbeaten in 13 before next weekend’s El Clasico at the Estadi Olimpic Lluis Companys.

Cadiz had boosted their survival hopes by winning two of their previous three in LaLiga and they had their chances, but they remain three points from safety.

Felix’s strike lit-up a first half of few clear-cut chances, in which Cadiz went close to taking a 22nd-minute lead when Javi Hernandez’s drilled angled effort forced Ter Stegen into a sharp near-post save.

But Barca edged in front in the 37th minute with their first real effort on goal following a corner.

Sergi Roberto headed the ball on and Joao Felix swivelled to send a bicycle kick inside Cadiz goalkeeper Conan Ledesma’s right-hand post for his sixth league goal of the season.

Barca should have extended their lead shortly before half-time when the ball broke to Fermin Lopez on the right edge of the box, but his goalbound shot was brilliantly blocked on the line by Cadiz defender Victor Chust.

Cadiz thought they had made an ideal start to the second period as Juanmi turned home Iza Carcelen’s low ball into the box, but the effort was ruled out as the striker was clearly offside.

Chust then headed narrowly wide for the home side, whose appeals for a penalty soon after when the ball appeared to hit Barca defender Pau Cubarsi on the arm were waved away, with the incident not reviewed by VAR.

Felix went close to doubling Barca’s lead through his first-time effort from Ferran Torres’ cross as the action flowed.

Barca were indebted to Ter Stegen with 10 minutes remaining as the German goalkeeper’s flying save from Diadie Samassekou’s thumping long-range shot preserved their slender lead.

Following Real’s 1-0 win at Mallorca earlier on Saturday, Barca closed the gap back to eight points ahead of next Sunday’s showdown between LaLiga’s top two.

Teenager Lamine Yamal struck a fine winner as Barcelona beat Mallorca 1-0 at the Estadi Olimpic Lluis Companys to move into second place in the LaLiga table.

The 16-year-old beat Predrag Rajkovic with a delightful curling effort in the 73rd minute, having seen the Mallorca goalkeeper tip his shot against the crossbar earlier in the second half.

That was among a number of impressive saves made by Rajkovic, which also included keeping out Ilkay Gundogan’s first-half penalty.

Having avoided a second successive 0-0 draw, Xavi’s men leapfrog Girona into second place, lying two points in front of them and five behind leaders Real Madrid ahead of those sides hosting Osasuna on Saturday and Celta Vigo on Sunday respectively.

Barca’s starting line-up showed four changes from last weekend’s goalless stalemate at Athletic Bilbao, with those coming out of the XI including midfielders Frenkie De Jong and Pedri after they were injured in that game, and Robert Lewandowski, who was on the bench.

The suspended Ronald Araujo was the other man dropping out of the team as 18-year-old Marc Guiu, Yamal, Joao Felix and Inigo Martinez came in.

The hosts had the chance to take the lead midway through the first half when Raphinha was brought down in the area by Jose Manuel Copete and the outcome after a VAR review was a penalty, but Gundogan saw Rajkovic push away his strike from 12 yards.

After Felix put an attempt wide, Barca saw their injury issues increase as Raphinha was forced to come off in the 37th minute, with Fermin Lopez taking his place.

The visitors then brought a save out of Marc-Andre ter Stegen as he dealt with Manu Morlanes’ header, before Rajkovic did well to deny Gundogan and tipped over Lopez’s headed effort.

Rajkovic produced more good work shortly after the break to keep out a deflected Felix shot.

Vedat Muriqi nodded against the Barca crossbar moments later, albeit with the flag going up for offside, and Yamal then saw his shot touched against the woodwork at the other end by Rajkovic just prior to the hour mark.

Xavi introduced Lewandowski and Vitor Roque soon after, and the latter put a header of his own just over the bar in the 69th minute.

Lewandowski then provided the assist as Yamal broke the deadlock in superb fashion, collecting the Poland striker’s pass just outside the box, moving into it and sending a wonderful strike into the top corner.

Yamal then teed up a Lopez effort that was skewed wide late on as Barca claimed the three points.

Vitor Roque’s maiden Barcelona goal saw the LaLiga champions win their first match since boss Xavi’s announcement that he is to depart as 10-man Osasuna were beaten 1-0 at the Estadi Olimpic Lluis Companys.

Roque, the 18-year-old Brazil forward recently signed from Athletico Paranaense, opened his Barca account with a header just past the hour mark, a minute after coming off the bench.

Despite having Unai Garcia sent off four minutes later, Osasuna showed some threat as they sought an equaliser but Barca were able to see out the win.

Xavi’s men bounced back after successive losses in the Copa del Rey at Athletic Bilbao and Saturday’s 5-3 home loss to Villarreal, after which the former Spain midfielder announced he would be leaving the club this summer, with the gap between them and leaders Girona reducing to eight points.