Barcelona were held to a 1-1 draw by Getafe in La Liga on Saturday, failing to make up ground on the top two teams in the Spanish title race.
Jules Kounde gave Barcelona an early lead, but Mauro Arambarri equalised for Getafe in the first half, and the Catalans were unable to break down Jose Bordalas' well-organised team.
The draw leaves Barcelona in third place, five points behind league leaders Atletico Madrid, who suffered a 1-0 defeat at Leganes earlier in the day.
Go Beyond The Boundary with our YouTube channel. SUBSCRIBE NOW!Despite winning the Spanish Super Cup last week and thrashing Real Betis in the Copa del Rey, suggesting a return to form after a slump in late 2024, Barcelona dropped two points on the road in their first league match of 2025 against 16th-placed Getafe.
"It's not done yet, we still have some matches to play and as I said before, we will fight until the end," Flick told reporters.
"Today it's one point more, not two points less. We missed (out on) two points, but we have to look forwards and make it better next time."
Flick fielded his strongest side in recent weeks, hoping to secure a result at Getafe, where Barcelona had failed to score in their previous four away visits.
The Blaugrana ended that streak in the ninth minute when Kounde, who also scored in the midweek Copa del Rey win against Real Betis, was cleverly set up by Pedri and scored on the rebound after David Soria saved his initial effort.
However, Barcelona faced the same difficulties they have often encountered at the Coliseum, with Getafe digging in and denying top scorer Robert Lewandowski any space.
Getafe equalized in the 34th minute when Coba's shot was parried by Barcelona goalkeeper Inaki Pena, and Arambarri pounced to score.
The hosts maintained their tight defensive setup in the second half, making life difficult for Barcelona.
Raphinha missed a golden opportunity to win the game for Barca in the closing minutes, hitting the side netting from close range after being found by Lamine Yamal's cross.
"It was a shame, the match, we had control of the game and with one chance they scored one goal against us, it's a shame," Kounde told Movistar.
After the match, Barcelona defender Alejandro Balde reported being subjected to racist abuse from some home supporters during the first half.
On Sunday, Spanish and European champions Real Madrid, currently second in La Liga, host Las Palmas with the aim of moving to the top of the table.
Griezmann blows penaltyIn another surprise result, league leaders Atletico Madrid suffered a shock defeat at Leganes, ending their club record run of 15 consecutive victories.
Matija Nastasic headed Leganes in front early in the second half, and Antoine Griezmann missed a late penalty, dragging his effort wide, as Atletico fell to their second league defeat of the season.
"I thought we were low on energy, it wasn't enough from us," Atletico goalkeeper Jan Oblak told DAZN.
"We'll keep our head up after (winning) 15 games, we lost this one and we have to keep going forwards... unfortunately the streak is over."
Leganes, 15th in the table, defended well to keep Atletico at bay in the first half, with Julian Alvarez and Griezmann hitting the woodwork.
Nastasic's header from a corner put Leganes ahead early in the second half, and they protected their lead without much trouble until controversially conceding a penalty for a debatable handball by Sergio Gonzalez.
Griezmann took responsibility from the spot but rolled his 90th-minute effort wide of the goal.
Atletico must now regroup in the Champions League, where they aim to reach the knockout rounds, as they face Bayer Leverkusen on Tuesday.
"They were 15 extraordinary games, I feel enormously proud at having set the (consecutive) winning record in Atletico's history," Atletico coach Diego Simeone told DAZN.
"We have to accept that defeat is part of the game and prepare ourselves for Tuesday."