Neymar's composed finish cancelled out Diego's wondergoal as Barcelona rescued a 1-1 draw with Atletico Madrid in the UEFA Champions League.
It appeared as though the visitors would take a slender lead from the quarter-final encounter at Camp Nou on Tuesday after Atletico's Brazilian midfielder struck.
Diego had started on the bench, but was called upon in the first half when Diego Costa – who overcame a knee injury to start the match – had to exit play.
And he duly lit up a match that proved every bit as tight as their respective positions in La Liga suggested with a rasping drive from 25 yards.
However, Brazil international Neymar ensured Gerardo Martino's side would not head into the return leg at Vicente Calderon with a deficit when he curled past the otherwise excellent Thibaut Courtois with just under 20 minutes remaining.
Diego Simeone's men will still have the advantage of an away goal in that fixture, but the tie remains nicely poised after the first encounter.
The visitors showed no signs of being fazed by a boisterous home crowd in the opening exchanges, home goalkeeper Jose Manuel Pinto showing the biggest display of nerves, but former Barca man David Villa failed to punish his weak clearance, inexplicably missing the target from eight yards after being found by Arda Turan.
Centre-back Gerard Pique was forced off in the 10th minute after falling heavily in an aerial challenge, Marc Bartra replacing him.
Despite the setback, Barcelona started showing glimpses of their free-flowing best and Lionel Messi showed superb footwork to escape Miranda before his throughball was collected by Andres Iniesta who was denied by a great block from Diego Godin.
Atleti were hit with an injury blow of their own as Costa limped off and a subsequent lack of physical presence in their attack helped Barcelona dictate the tempo, but Messi’s tame five-yard header was the closest they went before the break.
Indeed, Martino's men were almost caught on the counter, Villa's curling effort from the edge of the box forcing Pinto into a smart low save on the stroke of half-time.
Barcelona were met with a dogged Atleti display in the second half, and their tenacity paid dividends in the 56th minute.
Diego skipped cleverly past Iniesta before drilling an unstoppable drive which swerved past Pinto and into the top right-hand corner.
Barcelona sought a quick response, and Sergio Busquets' well-controlled volley from 20 yards almost provided one shortly after the hour mark, but Courtois was equal to the task.
However, there was nothing the Belgian could to stop Neymar levelling matters in the 71st minute.
Iniesta's exquisite outside-foot throughball found the 22-year-old on the left-hand side of the area and he curled a fine strike past a despairing Courtois.
The equaliser buoyed Barcelona, and the visitors had Courtois to thank for ensuring a fourth draw of the season between the two sides, the Chelsea loanee making impressive saves from Iniesta and Messi, the latter of which was a fine diving stop to prevent the Argentina international's superb free-kick finding the net.
|Coach: G. Martino|
for Piqué 12'
for Fàbregas 68'
|Gardner calls for fans´ support|
|Zidane: Benzema must score|
|Scholes: Liverpool are Champions League dark horses|
|Gerrard hopes for prolific Balotelli|
|Gervinho pens new Roma deal|
|Rodgers praises vice-captain Henderson|
|Argentine Primera Division Review: Independiente goalkeeper bags brace|
|Costa Rican Primera Division Review: Cartagines back to winning ways|
|Ronaldo to United a possibility, says Neville|
|Liga del Futbol Profesional Boliviano Review: Bolivar go top, Blooming slip up|
|Souness throws support behind Pardew|
|Allardyce targets defensive improvement|
|Bruce: Hernandez worth the wait|
|Ecuadorian Primera A Review: Barcelona win El Clasico del Astillero|
|Davies: Draw a fair result|
|Noble rues West Ham´s close shave|
|Klopp cautious with Kagawa|
|Eibar 0 Deportivo La Coruna 1: Dominguez earns Fernandez first win|
|Hull City 2 West Ham 2: Debutants star in KC drama|
|Verona 2 Palermo 1: Pisano own goal seals home win|
|Turkish Super Lig Review: Fener, Gala and Besiktas all held|
|Roma v CSKA Moscow: Garcia ready to recall attacking stars|
|Van Basten to return to AZ following leave of absence|
|Olympiacos will be toughest tie - Simeone|
|Porto v BATE: Sandro in line for return as Porto seek strong start|
|Calhanoglu pledges to attack off-colour Monaco|
|Malmo have advantage over Juventus - Hareide|
|Chambers´ tonsillitis adds to Arsenal defensive woes|
|Hasi: No expectations for Anderlecht|
|Verratti extends PSG contract|
|Bayern Munich v Manchester City: Kompany urges belief|
|Prandelli calls on fans to voice their backing|
|Michel wary of Atletico prowess|
|Double fitness boost for Everton|
|Barcelona v APOEL: Pedro expecting tough test|
|Vidal and Pirlo to miss Malmo clash|
|Maribor v Sporting Lisbon: Slovenians end 15-year wait|
|Athletic Bilbao v Shakhtar Donetsk: Muniain eyes home comforts|
|Rodgers ready to embrace Champions League challenge|
|Milan confirm injuries to Lopez and Alex|
|Ajax v Paris Saint-Germain: Away form not a concern, says Van der Wiel|
|Experience the key for Monaco boss Jardim|
|Anelka joins Mumbai|
|Chelsea v Schalke: Costa aims to maintain prolific form|
|Ancelotti seeks response against Basel|
|Zaha not giving up on United and England future|
|Garcia to miss Blackpool game with chest pains|
|Lambert keen to keep Villa grounded|
|Adebayor wants ruthless streak|
|Lahm not missing Kroos|
|Begovic unconcerned by Stoke inconsistency|
|United duo lavish praise on Di Maria|
|Rami targets starting berth|
|Wilshere prefers advanced role|
|Calderon: Ronaldo disillusioned at Real|
|Ferdinand: Moyes´ tactics were embarrassing|
|I never meant to disrespect Southampton - Schneiderlin|
|I never meant to disrespect Southampton - Schneiderlin|
|Howard: Lukaku wants to be world´s best|
|Bielsa remaining tight-lipped over Labrune talks|
|Mourinho salutes Costa character|
|Bruce makes plea to Hull fans|
|Foster slams ´pathetic´ Brunt abuse|
|Donadoni rues errors in Milan loss|
|Seoul v Western Sydney Wanderers: A-League side eye away win|
|Colombian Primera A Review: Once Caldas go top|
|Venezuelan Primera Division Review: Deportivo Tachira continue unbeaten run|
|Copa Sudamericana Preview: Boca Juniors, River Plate hold narrow leads|
|Uruguayan Primera Division Review: Racing go clear at top|
|Chilean Primera Division Review: President, coach clash doesn´t derail Colo Colo|
|Peruvian Primera Division Review: Melgar, Universitario remain undefeated|
|Brazilian Serie A Review: Sao Paulo beat leaders|
|Paraguayan Division Profesional Review: Nacional Asuncion win again|
|San Jose Earthquakes 1 Los Angeles Galaxy 1: Keane´s penalty miss proves costly|
|Milan progression encourages Inzaghi|
|Ligue 1 Review: Marseille revival continues as Lille stay unbeaten|
|La Liga Review: Valencia continue resurgence, Sevilla ignore goalkeeper crisis|
|Menez thrilled with Milan victory|
|Primeira Liga Review: Porto held at Guimaraes, Boavista claim first win|
|Serie A Review: Goals flow as Inter and Milan both win|
|Parma 4 Milan 5: Visitors triumph in nine-goal thriller|
|Galatasaray v Anderlecht: Unfancied pair meet in Turkey|
|Di Francesco: I would have gladly made 11 changes|
|Liga MX Review: America held by strugglers Universidad, Santos close in on leaders|
|Van Gaal focused on United trajectory|
|Borussia Dortmund v Arsenal: Familiar opponents renew rivalry|
|Championship Preview: Adams talks up Norwich, Wolves head to unbeaten Charlton|
|Bundesliga Review: Hamburg beaten again, Augsburg claim first points|
|Eredivisie Review: Cambuur humble rivals Groningen, Vitesse finally win|
|League Two Preview: Flitcroft urges Bury caution, Burton out to extend lead|
|Benfica v Zenit St. Petersburg: Battle of the high-fliers|
|Redknapp expected heavy United defeat|
|United can do much better, says Van Gaal|
|Benitez at a loss to explain Napoli defeat|
|Manchester United 4 QPR 0: Di Maria steals show on Falcao debut|
|League One Preview: Cotterill demands focus, Dickov bids to ease pressure|
|Monaco v Bayer Leverkusen: Hosts eye positive amid awful start|
|Mazzarri praises ´ideal´ Inter|
|Al Qadsia v Persipura: Kuwaitis seek place in third final|
|Liverpool v Ludogorets: Five-time winners back in the Champions League|
|Real Madrid v Basel: Break from La Liga woes for Ancelotti´s men|
|Inter 7 Sassuolo 0: Icardi hits hat-trick in rout|
|Nottingham Forest 1 Derby County 1: Scrambled equaliser earns visitors a point|
|CSL Review: Henan drop into bottom two after last-gasp equaliser|
|Juventus v Malmo: Allegri´s men aiming to crack Europe|
|Olympiacos v Atletico Madrid: Simeone´s men on crest of a wave|
|K. League Review: Top two earn narrow victories, Sangju Sangmu end winless run|
|Badstuber requires surgery on thigh injury|
|Godin: Our mentality remains|
|Bruce slams ´disrespectful´ Newcastle speculation|
|Pogba confirms Juve talks|
|Gotze expecting improvement at Bayern|
|Mancini interested in Portugal role|
|I was never close to United move - Muller|
|Welbeck impresses Wenger with debut display|
|Mourinho wary of Euro group rivals|
|Rio Ferdinand will never forgive ´biggest idiot´ Terry|
|MLS Review: New England win again, New York held|
|Erbil v Kitchee: Belencoso the key for Molina´s men|
|Al Hilal v Al Ain: Dalic happy with preparation|
|CONCACAF Champions League Preview: In-form Red Bulls travel to Canada|
|Casillas accepts fans´ criticism|
|Primeira Liga Review: Sporting held again, Rio Ave back to summit|
|La Liga Review: Atletico claim bragging rights, Neymar inspires Barca|