Athletic Bilbao veteran Aritz Aduriz matched a Lionel Messi goalscoring feat with his sensational winner against Barcelona on Friday.
Aduriz came off the bench in the 88th minute at San Mames and scored a spectacular overhead kick barely 60 seconds later to seal a 1-0 win over the champions.
It means the 38-year-old, who plans to retire at the end of this campaign, has now scored in 15 consecutive seasons in Spain's top flight, something only Messi has achieved before.
The Barca captain was missing from this match while he recovers from a calf problem.
Barca's defeat marked the first time since 2008-09 that the reigning LaLiga champions have lost their opening match of the new season. Back then, Real Madrid lost 2-1 to Deportivo La Coruna.
It was also Athletic's first victory over Barca in their last 12 meetings, although Ernesto Valverde has now lost five of his six LaLiga away games against his previous club.