Serge Gnabry and Leroy Sane scored as they opened the new Bundesliga season with a demolition of Schalke.

Leroy Sane, making his debut after a £44.7m move from Manchester City, assisted two of Gnabry's goals.

Hansi Flick's side have won 22 games in a row.

Robert Lewandowski, Leon Goretzka, Thomas Muller and 17-year-old Jamal Musiala scored their other goals.