Borussia Dortmund 1-0 Arminia Bielefeld: Erling Haaland returns from injury as Marius Wolf's first-half strike secures hard-fought win and boost hosts' title hopes after slip up by leaders Bayern Munich

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Borussia Dortmund edged past Arminia Bielefeld 1-0 on Sunday, with top striker Erling Haaland making a comeback from injury, to narrow the gap to Bundesliga leaders Bayern Munich to seven points, with a game in hand. 

Marius Wolf tapped in a Thorgan Hazard cutback for the winner in the 21st minute, with Donyell Malen twice hitting the woodwork, either side of Wolf's goal, in a largely one-sided game. 

Haaland, a transfer target for almost every major European club this season, made his comeback just past the hour, having been out since January with an adductor injury. 

Borussia Dortmund edged past Arminia Bielefeld to keep up the pressure on Bayern Munich

Marius Wolf tapped in a Thorgan Hazard cutback for the winner in the 21st minute

After last week's draw with Augsburg that followed their Europa League exit, the win was much-needed good news for coach Marco Rose. Dortmund move to 53 points, with Bayern on 60. 

Dortmund can further cut the gap on Wednesday when they meet Mainz 05 in a match postponed from last week because of COVID-19 cases in the Mainz team. Bayer Leverkusen are third on 45 following their 1-0 loss to Cologne. 

England midfielder Jude Bellingham was involved in the build-up to Wolf's first-half strike

Dortmund striker Erling Haaland returned from injury as a second-half substitute on Sunday