Athletic Club head coach Ernesto Valverde reiterated that despite Sunday's 0-1 defeat to Elche CF, the Lions' European dream is not completely dead in the water just yet.
The challenge could not be more difficult for Los Leones, who will have to beat Real Madrid at the Santiago Bernabeu next Sunday (18:30 CEST) while hoping CA Osasuna fail to beat Girona.
"We have to play a game and we have to fight for it," Valverde said post-match. "Let's not take it for lost, we have to keeping going until the end. We have one game left and we have to give it everything we've got it."
A Lucas Boye goal in stoppage time denied Athletic the chance to go into the final weekend with European qualification in their own hands. Los Leones had several chances to win the match, but were not clinical enough in the final third.
Valverde said: "We had some very clear chances, and it was a repeat of what has happened on other occasions with the bad luck we had with that goal at the end.
“The match was a summary of what this year has been like: dominating, getting into the final, shooting, not getting it right but them getting it right at the other end. That's how it was today too. It's a missed opportunity."
Work plan until 30 september
Barring any last-minute changes, Athletic's men's firs team will follow the work schedule below
Valverde: "We have to keep this up"
The boss was pleased after Athletic's win but insisted there is no time to rest on our laurels with fixtures coming thick and fast
Ruiz de Galarreta medical report
The central midfielder had to be subbed off during our match against Deportivo Alavés
Athletic unstoppable at Mendizorrotza
Goals from Iñaki Williams and Sancet tie up impressive victory of Los Leones
Match Pack: Deportivo Alavés vs Athletic Club (LaLiga MD6)
The Zurigorri are looking keep this good run going and consolidate their place at the top end of the table
Squad List: Deportivo Alavés vs Athletic Club (LaLiga MD6)
Ernesto Valverde has called up 23 players for Friday's clash at Mendizorrotza
Valverde: “We have a lot to play for against Alavés”
The boss urged his Lions to "keep grafting" as they get set to face Deportivo Alavés at Mendizorrotza on Friday night (21:00 CEST)
Peña Mikel Vesga opened in Vitoria-Gasteiz
Our midfielder's family and friends have established a new meeting point for Athletic fans in the city
Global TV Guide: Deportivo Alavés vs Athletic Club (LaLiga MD6)
When and where to watch Friday's Basque derby in every part of the world
Spectacular celebration for new San Mamés' 10th anniversary
The team and fans came together to celebrate a great victory on the day the current Cathedral turned 10 years old