A brilliant hat-trick from Robert Lewandowski led Bayern Munich to a comfortable 5-0 victory over Eintracht Frankfurt in Sunday's German Supercup, giving former Frankfurt coach Niko Kovac a memorable start to his reign at the Bavarian giants.

Kovac returned to Frankfurt for his first competitive game in charge of the Bundesliga winners, having ended two successful years at Eintracht with a shock win over Bayern in last season's German Cup final.