The veteran striker slotted home from the spot in the 10th minute to fire the Catalans ahead and reach his milestone, adding a second late on after Dani Olmo's goal to inflict the French side's first defeat.
Robert Lewandowski struck twice in two minutes as Barcelona crushed rivals Real Madrid 4-0 on Saturday, inflicting the Spanish champions' first La Liga defeat in over a year.
Robert Lewandowski's first-half hat-trick guided LaLiga leaders Barcelona to a 3-0 win away at Deportivo Alaves on Sunday as the Polish striker extended his lead at the top of the league's scoring charts.
Robert Lewandowski struck twice for Barcelona as they demolished Young Boys 5-0 in a one-sided Champions League clash on Tuesday.
"I know Robert (Lewandowski) really well and I don't think he has returned to form because that's how I have always seen him as a player," Flick told DAZN.
Robert Lewandowski shrugged off a string of missed opportunities to earn Barcelona a 2-1 win over Athletic Bilbao on Saturday in La Liga.
The German coach celebrated his first competitive match at the helm with three points as Barca came from behind against Ruben Baraja's solid Valencia side.
The Polish forward suffered the injury in Monday's win in a friendly against Turkey.
The champions' victory denies leaders Real Madrid the chance to take the crown by simply beating Cadiz next Saturday. Los Blancos are 11 points clear of Barcelona with five matches remaining.
The veteran striker slotted home from the spot in the 10th minute to fire the Catalans ahead and reach his milestone, adding a second late on after Dani Olmo's goal to inflict the French side's first defeat.
Robert Lewandowski struck twice in two minutes as Barcelona crushed rivals Real Madrid 4-0 on Saturday, inflicting the Spanish champions' first La Liga defeat in over a year.
Robert Lewandowski's first-half hat-trick guided LaLiga leaders Barcelona to a 3-0 win away at Deportivo Alaves on Sunday as the Polish striker extended his lead at the top of the league's scoring charts.
Robert Lewandowski struck twice for Barcelona as they demolished Young Boys 5-0 in a one-sided Champions League clash on Tuesday.
"I know Robert (Lewandowski) really well and I don't think he has returned to form because that's how I have always seen him as a player," Flick told DAZN.
Robert Lewandowski shrugged off a string of missed opportunities to earn Barcelona a 2-1 win over Athletic Bilbao on Saturday in La Liga.
The German coach celebrated his first competitive match at the helm with three points as Barca came from behind against Ruben Baraja's solid Valencia side.
The Polish forward suffered the injury in Monday's win in a friendly against Turkey.
The champions' victory denies leaders Real Madrid the chance to take the crown by simply beating Cadiz next Saturday. Los Blancos are 11 points clear of Barcelona with five matches remaining.
Lewandowski set up goals for Joao Felix and Fermin Lopez either side of striking himself to pull Barcelona second, eight points behind leaders Real Madrid.