The possession (69%), shot count (21-5) and corner (12-0) stats underlined BVB's dominance. That said, the Black & Yellows struggled somewhat at the start and it took a set-piece for them to break the deadlock. Since data collection began in 1992, Arminia Bielefeld have not had fewer shots in a Bundesliga home game than they did today.

Brace: Mats Hummels picked up the second brace of his Bundesliga career. The first came when BVB travelled to Cologne in January 2010 – almost 11 years ago.

Aerial specialist: Hummels has scored nine of his last 11 Bundesliga goals from headers. It is the first time since the spring of 2011 that the defender has scored in successive games in the German top flight. And his two goals this season are already more than the past four seasons, in each of which he scored once.

Winning run ahead of the big one: The Black & Yellows have now recorded four Bundesliga wins in a row and are in fine form ahead of their top-of-the-table clash against FC Bayern on Saturday.

End of the "Alm curse: BVB won their first Bundesliga match in Bielefeld since 1999. After that game came seven away defeats.

Longest clean sheet streak: For the first time in three years – and therefore since Lucien Favre's arrival – Borussia have kept four consecutive clean sheets.

Bellingham in the spotlight: Jude Bellingham had the most touches of the ball (122), won 55% of his challenges and was involved in seven shots (took three himself and set up four) – more than any other player except Julian Brandt.

In the top 10: Lukasz Piszczek made his 323rd Bundesliga appearance, which means he is now in the top 10 of the ranking list for overseas players with most appearances.

Busy day at the office: Arminia's keeper Ortega had more touches of the ball than any of his team-mates (54) and limited the damage by making eight saves.