On 1 August, after a summer of transfer speculation, Bayern CEO Karl-Heinz Rummenigge, confirmed in an interview that Lewandowski would not be allowed to leave Bayern at any price, saying "the top quality we have at Bayern Munich will stay here. With Robert, we clearly want to send a signal to people within and outside the club: Bayern Munich are completely different to other clubs who get weak when certain sums are mentioned" On 12 August, Lewandowski recorded the first ever hat-trick in the DFL-Supercup in a 0–5 away victory against Eintracht Frankfurt in the 2018 edition as Bayern Munich went on to win the title for the record seventh time. He also became the all-time top scorer in the German Supercup history.