Pablo Ibanez s gorgeous extra-time volley stunned Athletic Bilbao as Osasuna sealed their spot in the Copa del Rey final with a 1-1 draw at San Mames that secured a 2-1 aggregate win.
Jagoba Arrasate s men only held a slender 1-0 lead from last month s first leg in Pamplona, and for much of the match that looked unlikely to be enough.
Athletic deservedly levelled the aggregate score just after the half-hour, with Inaki Williams diverting Mikel Vesga s flick-on home from close range.
The Ghana international s younger brother Nico Williams seemed destined to put Athletic ahead in the tie during the second half, but the Spain winger wasted two glorious opportunities.
Athletic s profligacy coupled with Sergio Herrera s excellence between the posts ensured the game was extended by another 30 minutes.
Osasuna capitalised with just four minutes of extra time left, and in spectacular fashion, as Jon Moncayola s cross to the edge of the box was met by an exceptional controlled volley from Ibanez that left Julen Agirrezabala helpless.
Los Rojillos will face either Barcelona or Real Madrid – whose second leg is on Wednesday – in what will be just Osasuna s second Copa del Rey final ever.
1 Osasuna will play their second Copa del Rey final in their history (1-2 defeat to Real Betis in 2005), becoming the first team to reach the final after four extra-time matches in the same tournament. Resilience.
— OptaJose (@OptaJose)