European football: Barça's perfect start to the season ends with humiliation at Osasuna | European club football

Croatian striker Ante Budimir scored two goals in support Osasuna Achieve a surprise 4-2 home win over the league leaders Barcelona and handed the visitors their first defeat of this La Liga season on Saturday.

Bryan Zaragoza, on loan from Bayern Munich, crossed for Budimir, who opened the scoring with a close-range header in the 18th minute, and the 23-year-old winger extended Osasuna's lead with a goal from a quick counterattack ten minutes later.

Barça reduced the deficit thanks to a mistake by Osasuna goalkeeper Sergio Herrera, who failed to keep out a weak shot from Pau Víctor in the second half, but Budimir extended the hosts' lead with a penalty in the 72nd minute after being fouled in the box.

Substitute Abel Bretones scored the fourth goal with a brilliant long-range effort before Lamine Yamal scored a late consolation goal with a shot from the edge of the box. Barça continue to lead the table with 21 points, four ahead of second-placed Real Madrid, who face Atlético Madrid in Sunday's derby.

Barcelona head coach Hansi Flick said the defeat was “my responsibility” because too many key players were sidelined. “I tried to protect the players because they played a lot of minutes. But I didn't expect us to play like that. We made a lot of mistakes and Osasuna did well.”

Real company ended their four-game home run in La Liga with defeat Valencia 3-0 at Anoeta. Takefusa Kubo opened the scoring in the eighth minute, but the points were not assured until substitute Orri Óskarsson scored twice in the final ten minutes. Valencia then falls back into the relegation zone Getafe saw off Alaves 2-0 at home for the first win of the season.

Dusan Vlahovic scored two goals in support Juventus 3-0 win Genoa and rise to the top of Serie A overnight and overtake them Interwho had previously briefly been at the top after a brace from Lautaro Martínez helped them to a 3-2 win at Udinese.

Vlahovic converted the penalty when Juventus were awarded a penalty for a handball just after half-time, before scoring again from a tight angle in the 55th minute. Substitute Francisco Conceiçao sealed the win with a low one-touch finish at the end.

The match in Genoa was played behind closed doors after crowd violence erupted during the hosts' Coppa Italia derby against Sampdoria, leaving more than 50 people injured. Juventus, which has drawn 0-0 in its last three league games, leads the table with 12 points from six games, one point ahead of Turin, which hosts Lazio on Sunday.

Juventus coach Thiago Motta responded to criticism of Vlahovic after the game. “I think you pay too much attention to one player,” Motta said. “He was always very good. I understand the expectations and needs of a striker at this level. But as I said from the beginning, he is a positive leader who helps a lot.

“I'm happy because he scored, but I was also happy when he didn't. He needs to improve and be more connected to the team because he is an important player in many aspects of our game. He’s fine and needs to keep working like he’s doing.”

Lautaro Martínez scored and helped on either side of the half-time break Inter to a 3-2 win Udinese in Serie A as the defending champions recovered to end a three-game winning streak in all competitions.

Davide Frattesi gave Inter the lead after 43 seconds from a superb low cross from Matteo Darmian, before Udinese defender Christian Kabasele equalized with a header. Martínez put the visitors back in the lead when he steered the ball over the line in stoppage time in the first half, making it 3-1 shortly after half-time. Lorenzo Lucca scored the next goal for Udinese in the 83rd minute.

Later on Saturday, Atalanta got a point against 10 men Bologna in the 90th minute thanks to Lazar Samardzic. The hosts scored just after half-time through Santiago Castro before defender Jhon Lucumi was sent off.

In Ligue 1, Monaco maintained their unbeaten start as Lamine Camara's stoppage-time goal secured a 2-1 win Montpellier. The guests surprisingly took the lead Rabbi Nzingoula In the 16th minute, Folarin Balogun equalized the first half before Camara scored the winner in the last minute. Lille are in fourth place after Jonathan David's hat-trick gave them a 3-0 win Le Havre.