Debutant Sandro was the unlikely hero as Barcelona left it late to snatch a 1-0 victory at Villarreal on Sunday.
Barca toiled on a poor El Madrigal pitch and against a stubborn home defence until 19-year-old Sandro came off the bench to score a scrappy 82nd-minute winner on his first La Liga appearance.
Lionel Messi, captaining Barca in the absence of Andres Iniesta, wriggled free down the right and his low cross-shot was diverted into Sandro's path by Villarreal keeper Sergio Asenjo, and the youngster stabbed home from three yards.
Asenjo had been in superb form up to that point and was perhaps unfortunate to be on the losing side, while Villarreal also hit the post twice shortly before Sandro broke the deadlock.
The win means new Barca coach Luis Enrique has six points from his two games in charge, following on from last week's 3-0 defeat of Elche, and the 44-year-old will also be buoyed by the return of Neymar, who came on as a substitute for the final half an hour.
Villarreal were without Nigeria striker Ikechukwu Uche due to injury, with Bruno coming in as they effectively played without a centre-forward, while Barca had Javier Mascherano suspended following his red card against Elche.
The hosts had to weather an early storm and Asenjo produced an acrobatic dive to get to a well-struck Pedro shot after he was fed by Messi.
However, Villarreal should have taken the lead on 22 minutes, only for defender Victor Ruiz to fail to connect properly after a wicked cross from the right found its way through to him at the back post.
Barca predictably responded and Asenjo showed great reflexes to tip a deflected Messi free-kick onto the post.
Dani Alves - who received a hostile reception from the home fans after last season's racism storm - was enjoying plenty of space out wide while overlapping from the right, but Barca were frustrated in their attempts to force an opener.
Denis Cheryshev showed good pace on the break for Villarreal at the start of the second half and Barcelona survived another scare when back-tracking defender Jeremy Mathieu turned a cross onto his own post.
Normal service was soon resumed as Barca began to dominate possession again, but they were too often reduced to floating in hopeful balls from the flanks with teenage forward Munir failing to make his presence felt before making way for Neymar.
The Brazil star almost scored soon after his introduction, but just failed to force the ball home in a goalmouth scramble before then wildly firing another half-chance over.
Tomas Pina then struck the woodwork for Villarreal, before Messi burst through on the right side of the area and his stab across goal was poked home by Sandro to claim a hard-earned three points for the visitors.
|West Brom sign Livermore|
|Lyon president Aulas: Depay deal imminent|
|Aubameyang: I could leave Dortmund, but I´d never join Bayern|
|´Equating Messi with anyone else is like comparing a policeman with Batman´ - Sampaoli|
|It will take years to build football culture, Wenger warns CSL|
|´Worried´ Rakitic wants Barca renewal|
|Inter not signing Messi - Moratti|
|Luis Enrique hails Barca defence after ending Anoeta curse|
|´He is made of different stuff´ - Spalletti hails Nainggolan after wondergoal|
|Tottenham´s Janssen turned down Galatasaray move, agent claims|
|Did Carroll´s wondergoal give the West Ham striker whiplash?|
|Iniesta suffers calf injury|
|Swansea situation not ´hopeless´, says Clement|
|Real Sociedad 0 Barcelona 1: Neymar ends Anoeta curse|
|´Immeasurable bulls**t´ - Ligue 1 coach destroys Van Basten´s offside plan|
|Simeone praises Atletico´s precision in Copa Del Rey win|
|Fonte situation difficult for Southampton - Puel|
|´Some of the best football in the UK´ - Watford´s Mazzarri hails Bournemouth|
|Senegal 2 Zimbabwe 0: Cisse´s men charge into quarter-finals|
|Rivaldo backs Luis Enrique to deliver more Barca success|
|Atletico Madrid 3 Eibar 0: Routine win earns quarter-final lead|
|Jesus will make Premier League history - Rivaldo|
|Adebayor: Arsenal are just Ozil and Sanchez|
|Algeria 1 Tunisia 2: Favourites on brink of elimination|
|Bayern keen to seal Coman deal as Rummenigge cools Gnabry interest|
|Pochettino has done his homework on Jesus as Spurs look to march on|
|Scrap offside? Premier League managers give Van Basten´s plans a cool reception|
|Coman ready for Bayern comeback, confirms Ancelotti|
|Pochettino upbeat despite six weeks out for Vertonghen, Lamela still a mystery|
|Cerezo defiant over Griezmann amid talk of Manchester United agreement|
|Robinho named in Brazil squad for Chapecoense fundraiser|
|Davies and Lookman aren´t the big men of Everton, warns Koeman|
|Ivory Coast v DR Congo: Dussyer demands champions show true strength|
|Replacing Robben and Ribery not easy - Hitzfeld|
|Yeray back in Athletic training after successful cancer surgery|
|Karanka targeting more Boro deals after Bamford swoop|
|Cavani: I am the ultimate finisher|
|Morocco v Togo: El Ahmadi hungry for success|
|Ancelotti denies Verratti approach|
|A-League Review: Cahill double sees Melbourne City sink Mariners|
|Manchester United very happy with Shaw, insists agent|
|Mertesacker extends Arsenal deal|
|Boost for Arsenal as key quartet returns to training|
|Will Jesus save Manchester City´s title bid? Guardiola´s new striker in Opta numbers|
|Tevez mobbed after touching down in Shanghai|
|Payet exit not inevitable - Bilic|
|Wenger: Arsenal don´t need Payet|
|Jesus wants Manchester City titles|
|Orsolini arrives for Juventus medical|
|Rivaldo backs Coutinho to join Neymar at Barcelona|
|No danger of Messi leaving Barcelona, says father|
|Augusto: I convinced Oscar to come to China|
|Madrid-bound Maradona visits Napoli training|
|Sevilla in no rush over Sampaoli talks despite Barcelona links|
|Cafu: Resurgent Brazil can challenge world´s best|
|Klopp thrilled with Coutinho|
|Manchester United replace Real Madrid as world´s richest club|
|Madrid squad annoyed by defeats - Zidane wants more energy after latest loss|
|Casemiro rues more misery for Madrid against Celta|
|´Job done, let´s go home´ - Klopp happy to avoid extra time with narrow Plymouth win|
|FA Cup Review: Southampton leave it late to beat Norwich|
|Real Madrid 1 Celta Vigo 2: Aspas and Jonny extend Madrid winless run|
|Plymouth Argyle 0 Liverpool 1: Rare Lucas goal sees Klopp´s men through|
|Manchester City in La La Land as Schalke toil underground|
|Cameroon 2 Guinea-Bissau 1: Ngadeu-Ngadjui completes comeback to send Broos´ men top|
|Monaco confirm signing of Ajax teenager Antonucci|
|Manchester United´s interest in Griezmann is unsurprising - Simeone|
|Bamford ends spell in Chelsea wilderness with Boro return|
|Louis the great - Luis Enrique explains his and Barca´s debt to Van Gaal|
|Gabon 1 Burkina Faso 1: Spot-on Aubameyang makes his point|
|PSG send Ikone on loan to Montpellier|
|Senegal v Zimbabwe: Cisse wants to live up to favourites tag|
|Ghana´s Rahman leaves AFCON with knee injury|
|Algeria v Tunisia: Mahrez demands improvement in crucial Group B clash|
|Dortmund forward Dembele hits out at Bundesliga refereeing|
|Robben hopes Alonso stays at Bayern amid retirement rumours|
|Asian champions Jeonbuk banned from 2017 Champions League|
|Rakitic still an important player for Barcelona - Luis Enrique|
|Jesus will develop quicker at City - Emerson|
|Always take the weather with you - Spanish snow blights CSKA´s training camp|
|Messi never gave Coach interview, claims father|
|Gotze questions critics but admits to falling short of expecations|
|´Conte can have our title´ - Ranieri wants Chelsea to win the Premier League|
|Tottenham reject Premier League, Bundesliga offers for Wimmer|
|Liverpool sell Ilori to Reading|
|Potential victims in football abuse probe surpasses 500|
|Bonaventura signs new AC Milan contract|
|Messi: Ronaldo has achieved great things|
|Koscielny: Wenger has built men at Arsenal|
|Messi vows to stay at Barcelona ´for as long as they want me´|
|Cafu adamant Neymar will become world´s best|
|I´m just taking a sabbatical - Van Gaal denies he´s retired|
|Not even Gerrard won Premier League - Buttner says he´s not a United flop|
|Samper ignored Wenger as Barca midfielder rejected Arsenal|
|Pleased Pioli wants more from Inter|
|Evergrande boss Scolari dismisses Turan links|
|Klopp seeks legal advice over Matip|
|Marseille complete Sanson move|