After being the top scorer in the third and second tiers of Polish football with Znicz Pruszków, Lewandowski moved to top-flight Lech Poznań, helping the team win the 2009–10 Ekstraklasa. In 2010, he transferred to Borussia Dortmund, where he won honours including two consecutive Bundesliga titles and the league's top goalscorer award. In 2013, he also featured with Dortmund in the 2013 UEFA Champions League Final. Prior to the start of the 2014–15 season, Lewandowski agreed to join Dortmund's domestic rivals, Bayern Munich, on a free transfer. In Munich, he has won the Bundesliga title in each of his first seven seasons. Lewandowski was integral in Bayern's UEFA Champions League win in 2019–20 as part of a treble. He is one of only two players, alongside Johan Cruyff, to achieve the European treble, while being the highest goalscorer in all three competitions, and first to do it as the sole top scorer.