Robert Lewandowski became the first player to score a hat-trick in the Champions League for three clubs as Barcelona crushed Viktoria Plzen 5-1 in Group C.
Frank Casey nodded with his first Barcelona goal to lead them to a flyer.
Lewandowski then went off the mark on the night with 34 minutes on the clock.
He added a second in the last seconds of the first half.
It was moments after Jan Sikora dropped the difference in favor of Plzen.
But the attack continued after the break as Barcelona and Lewandowski added to their tally.
And the Polish raised his score in the Champions League to 89 in 67 minutes to claim the game of the match.
This treble now goes to the previous treble he scored with Bayern Munich and Borussia Dortmund.
He continued to improve with Barcelona as Ferran Torres completed the defeat by five.
Meanwhile, Bayern beat Inter 2-0 in the same group.
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It was thanks to Leroy Sane’s amazing goal and Danilo D’Ambrosio’s own goal.
In the second set, Atletico Madrid’s Mario Hermoso scored in injury time against Porto and then missed a penalty kick around Mateus Uribe.
But Antoine Griezmann scored Atletico’s goal in the eleventh minute of stoppage time to beat the Spanish hosts, Porto, consisting of ten men, 2-1.
It was after Mehdi Tarmi was offered the second yellow for diving.