Iker Muniain inspired his side with two goals and an assist
Iker Muniain scored twice - including an extra-time penalty winner - as Athletic Bilbao knocked Barcelona out of the Copa del Rey in the last 16.
Muniain opened the scoring inside two minutes, before Ferran Torres scored his first Barcelona goal to level in the 20th minute.
Inigo Martinez thought he'd won it only for Pedri to fire in a last-gasp leveller and force extra time.
But Muniain's 105th-minute penalty clinched victory for the hosts.
Defeat deepened the gloom for Barca - sixth in La Liga and enduring a miserable season - with boss Xavi's only realistic hopes of a trophy this season now lying with the Europa League.
Athletic took the lead early on when Nico Williams, younger brother of Athletic winger Inaki, crossed for Muniain, who curled beautifully into the corner past goalkeeper Marc-Andre ter Stegen.
Torres scored a similar goal at the other end 18 minutes later, restoring parity in a pulsating game.
In the 86th minute, Martinez forced Muniain's free-kick over the line via a header from substitute Alex Berenguer, with the goal given after a VAR check for offside.
Berenguer then thought he had made it 3-1, but the goal was ruled out for offside, before Pedri struck for Barca in stoppage time after Dani Alves' overhead assist.
But it only delayed Barcelona's disappointment as Muniain converted from the spot when Jordi Alba was judged to have handled a cross in the area.
- Line-upsMatch Stats
Line-upsAth Bilbao
Formation 4-4-2
26Agirrezabala18De Marcos12Vivian4Martínez17Berchiche30Williams14García Carrillo6Vesga10Muniain8Sancet22García
- 26Agirrezabala18De MarcosBooked at 104minsSubstituted forLekueat 105'minutes12Vivian4Martínez17BerchicheSubstituted forBalenziagaat 90'minutes30WilliamsSubstituted forZarragaat 110'minutes14García CarrilloBooked at 30mins6VesgaSubstituted forNolaskoainat 117'minutes10MuniainBooked at 120mins8SancetSubstituted forWilliamsat 52'minutesBooked at 119mins22GarcíaSubstituted forBerenguer Remiroat 79'minutes
Substitutes
- 1Simón2Petxarroman3Núñez7Berenguer Remiro9Williams15Lekue19Zarraga21Capa23Nolaskoain24Balenziaga33Serrano
Barcelona
Formation 4-3-3
1ter Stegen8Alves da Silva4Araújo3Piqué18Alba16González López5Busquets30Paez Gaviria19Torres29Jutglà33Ezzalzouli
- 1ter Stegen8Alves da Silva4Araújo3PiquéBooked at 76mins18AlbaBooked at 105mins16González LópezBooked at 97minsSubstituted forBraithwaiteat 105+3'minutes5Busquets30Paez GaviriaSubstituted forde Jongat 61'minutesBooked at 104mins19Torres29JutglàSubstituted forFati Vieiraat 61'minutesSubstituted forDestat 96'minutes33EzzalzouliSubstituted forGonzález Iglesiasat 45'minutes
Substitutes
- 2Dest6Puig Martí10Fati Vieira12Braithwaite13Murara Neto14González Iglesias15Lenglet21de Jong22Mingueza31Balde Martínez36Tenas
Referee:José Luis Munuera MonteroAttendance:37,287Match StatsHome TeamAth BilbaoAway TeamBarcelonaPossessionHome33%Away67%ShotsHome19Away7Shots on TargetHome7Away3CornersHome8Away3FoulsHome24Away22
Source: bbc.com