• For the first time Cologne have lost its first four games of a Bundesliga season. Zero points and a minus 11 goal difference is the second worst start in Bundesliga history after four games. Only Karlsruhe had a worse start, in 1963-64 with no points and -13 goals.
  • Borussia Dortmund extended its club record run to 40 unbeaten home matches in the Bundesliga (W33, D7). Its last home loss came in April 2015 against Bayern Munich (0-1).
  • Cologne suffered its heaviest defeat under manager Peter Stoger. Its last three defeats by five goals came against Dortmund.