Borussia Dortmund suffered a disappointing home defeat to Bayer 04 Leverkusen, as Alario's 63rd-minute strike proved decisive in a closely contested Bundesliga clash. The visitors capitalized on a rare mistake in the Dortmund defense to snatch all three points, leaving the hosts frustrated with a meager point gain. This defeat sees Leverkusen leapfrog Dortmund in the standings, dealing a significant blow to their title ambitions.