Stephane M'Bia's 94th-minute header broke Valencia hearts as Sevilla progressed to the UEFA Europa League final on away goals on Thursday.
The Cameroon international – on loan from Queens Park Rangers - nodded home deep into second-half stoppage time, giving Sevilla a 3-1 defeat on the night.
And that was enough to send his side through on away goals despite Valencia's brave fightback.
M'Bia, who scored in Sevilla's 2-0 first-leg win, rose highest at the near post to finish past Valencia goalkeeper Diego Alves after Coke's long throw was flicked on by Federico Fazio.
Sevilla will have been well aware of Valencia's never-say-die attitude after Juan Antonio Pizzi's men overturned a 3-0 deficit to emerge as 5-3 victors in their quarter-final tie with Basel.
And that spirit was evident as Sofiane Feghouli halved the aggregate deficit 14 minutes in.
Jonas' header - from a Juan Bernat cross - was then deflected over the line by goalkeeper Beto after it hit the underside of the crossbar.
Defender Jeremy Mathieu scooped into the roof of the net in the 70th minute to give his side the lead but they were to be denied, as M'Bia's last-gasp effort booked Sevilla a final showdown with Benfica in Turin on May 14.
The hosts were without the suspended Paco Alcacer - scorer of a hat-trick in his side's sensational win against Basel last month - but Valencia still started brightly, with Jonas prodding an effort at Beto in the first two minutes.
Carlos Bacca scored the second in last week's first leg and he had a great chance to open the scoring this time around, only to skew wide of the target in the eighth minute.
It was the home side who would take the early lead, though, as Feghouli exchanged passes with Eduardo Vargas before showing great composure to cut inside Fazio and drive home via a slight deflection.
The Algeria international continued to wreak havoc, forcing Beto into a save after battling his way through the visiting defence, and Valencia were level in the tie in the 26th minute.
Bernat whipped in a sublime cross from the left for Jonas to meet with his head, and his powerful effort was tipped onto the woodwork by Beto.
The ball then rebounded onto the goalline before eventually crossing the line off the keeper's back to send the Mestalla crowd wild.
Jose Antonio Reyes should have restored Sevilla's aggregate advantage nine minutes before the break, but his sliding effort from close range was superbly saved by goalkeeper Alves after Bacca's backheel across the face of goal.
Chances dried up in the second half, with extra time looking an increasingly likely prospect, but Mathieu had other ideas with 20 minutes remaining.
The centre-back reacted quickest when the ball fell loose from a corner, with his smart finish firing Valencia in front.
Sevilla applied some late pressure, knowing that just a single goal would prove enough, but chances were at a minimum.
That was until M'Bia's telling impact, though, as Sevilla reached the final of Europe's secondary club competition for the first time since 2007, when they lifted the trophy.
|Dzeko considers Chelsea among Champions League contenders|
|Cavani doesn´t need to be friends with Neymar|
|Ozil and Sanchez committed to Arsenal, Mertesacker claims|
|Don´t stress it - De Bruyne relaxed over initial Man City contract talks|
|Nagelsmann´s path will lead to Bayern, says Heynckes|
|Stones satisfied with strong Manchester City showing|
|Redknapp: Spurs boss Pochettino could manage Real Madrid|
|That will be hard to beat – Klopp revels in record win|
|Spurs showed they can compete with elite - Pochettino proud after Madrid draw|
|Ballon d´Or? We all know Messi is best, says Valverde|
|He´s getting better – Zidane backs Benzema|
|Napoli star Insigne unsure if he´ll be fit to face Inter|
|Manchester City can win Champions League, says Napoli boss Sarri|
|Berizzo plotting Sevilla´s revenge after Spartak Moscow humiliation|
|Porto boss Conceicao defends Casillas omission|
|We know it´s difficult now, admits Dortmund boss Bosz|
|It´s tough but it´s not over - Van Bronckhorst|
|Monaco know it will be difficult to qualify now, says Sidibe|
|I don´t know what happened - Sarri bemused by Napoli´s slow start|
|We are growing consistently, insists upbeat Zidane|
|Guardiola hails ´perfect´ City after beating ´one of the best´|
|Real Madrid can´t be happy with Tottenham draw, says Navas|
|Klopp heralds counter-pressing as Liverpool run riot against Maribor|
|Liverpool break record in Maribor thrashing|
|City style fades but newfound steel gives Guardiola reason to believe|
|Ederson kept us in it - Walker relieved after City´s second-half wobble|
|APOEL 1 Borussia Dortmund 1: Sokratis header spares Burki´s blushes|
|Emery backs ´intelligent´ Mbappe to respond|
|Feyenoord 1 Shakhtar Donetsk 2: Bernard brace piles pressure on Van Bronckhorst|
|Monaco 1 Besiktas 2: Tosun double pours more misery on Jardim´s men|
|Spartak Moscow 5 Sevilla 1: Clinical second-half show stuns woeful Spaniards|
|RB Leipzig 3 Porto 2: Hosts claim maiden Champions League victory|
|Maribor 0 Liverpool 7: Salah and Firmino doubles inspire rampant Reds|
|Manchester City 2 Napoli 1: Guardiola´s men see off Serie A leaders despite second-half scare|
|Real Madrid 1 Tottenham 1: Ronaldo on target as Lloris heroics earn point|
|´Older, better´ Dzeko feeling good on return to England|
|Persepolis 2 Al Hilal 2 (2-6 agg): Kharbin at the double as Al Hilal reach final|
|Monaco without Ghezzal and Jovetic for Besiktas clash|
|De Bruyne agent eyes Neymar, Mbappe-style wages for Manchester City star|
|Mertesacker not interested in Deeney’s ´cojones´ comment|
|Craig Shakespeare sacked by Leicester City|
|Messi is the best in the world, says Paulinho|
|Valverde ready for ´emotional´ game against old boys OIympiacos|
|Manchester United expecting a tough game against Benfica, says Ashley Young|
|Rafinha has ´no interest´ in Barca exit - Mazinho|
|Mourinho would be happy with draw against wounded Benfica|
|O´Neill wary of Eriksen threat after Republic of Ireland draw Denmark in World Cup play-offs|
|Simeone and Atletico wary of Qarabag threat|
|Robben set for landmark as Barca´s Valverde welcomes former side - Champions League in Opta numbers|
|Conte´s harsh words will motivate us, insists Alonso|
|Mourinho: I´m not signing new contract and I´m not joining PSG|
|Bayern´s Martinez out for at least two matches|
|Besiktas ask fans not to attend Champions League clash with Monaco|
|Fit-again Morata could face Roma, Conte reveals|
|Juventus must share the blame for defensive woes, says Chiellini|
|Nice president supports Balotelli for Italy recall|
|Celtic´s Roberts modelled his game on Robben|
|World Cup play-offs: Italy to face Sweden, Republic of Ireland meet Denmark|
|Juventus are not in any kind of crisis, says Allegri|
|Watford can beat Chelsea claims Cleverley|
|Sigurdsson admits to falling short at Everton|
|Lloris hails ´machine of success´ Cristiano Ronaldo|
|Ox not ready for central role, Klopp says|
|My career´s gone - Redknapp flags likely retirement|
|Spurs must be wary of Isco ´magic´, warns Pochettino|
|Riedle defends Bundesliga quality amid early Champions League struggles|
|Manchester City v Napoli: The numbers behind Europe´s most lethal attacks|
|Jardim says French champions Monaco down on confidence|
|Spurs star Kane an obvious target for Real Madrid – Redknapp|
|Bosz and Dortmund eyeing much-needed victory as Schmelzer returns|
|Szczesny: I didn´t improve at Arsenal due to tactical gulf|
|Pochettino wants ´10 or 15 years´ at Tottenham|
|Shakespeare hails Mahrez response after ´kick up the backside´|
|Leicester City 1 West Brom 1: Mahrez cancels out Chadli magic|
|Hamsik not worried by Maradona record ahead of Man City clash|
|Man City better than Real Madrid? Sarri daunted by Napoli´s Etihad assignment|
|Ashley puts Newcastle United put up for sale|
|Lovren accuses ´nervous´ Lukaku of deliberate kick during Manchester United draw|
|One small step for Ox... Klopp praise for under-fire midfielder|
|Klopp denies Liverpool have lost confidence|
|Manchester ready for goal rush as Spurs visit fortress Bernabeu - Champions League in Opta numbers|
|Tottenham one of Europe´s best, claims Riedle|
|Watch: Barcelona mark Messi debut with footage of La Masia magic|
|Ronaldo has to win Ballon d´Or, says Isco|
|Guardiola not falling for De Laurentiis´ Napoli script change|
|Guardiola´s ´genius´ inspiring Sterling at Manchester City|
|He is a complete forward – Zidane an admirer of Kane|
|Bale could miss both Tottenham games, concedes Zidane|
|Guardiola takes pressure off De Bruyne amid Messi comparisons|
|Napoli should rest stars against Manchester City - De Laurentiis|
|Switzerland, Italy, Croatia & Denmark seeded for World Cup play-offs|
|Kane takes Real Madrid interest ´very naturally´, says Pochettino|
|Chelsea struggling to fight on several fronts, Conte concedes|
|Jiangsu Suning confident Capello not Italy-bound|
|Pochettino: Madrid are not the Ronaldo team|
|Boateng considered Bayern exit|
|Nonsense! Critics won´t force Postecoglou out says Socceroos great Moore|
|MLS Review: Sounders, Timbers book play-off spots|
|Lukaku dismisses suggestions he is a flat-track bully|
|Milan will go along with Montella - Fassone backs boss after derby loss|
|Valencia win incredible nine-goal thriller at Betis|
|Spalletti hails Inter´s derby hero Icardi as complete striker|
|D´Ambrosio was clever - Milan boss Montella angry at Inter´s winning penalty|
|Mandanda breaks Marseille appearance record|