Borussia Dortmund secured their first Bundesliga win of the season on Sunday evening, defeating Mainz 05 3-1 at Signal Iduna Park. The match was a closely contested affair, with both sides showing great skill and determination throughout.

In the opening stages of the game, it was Borussia Dortmund who took control and created numerous opportunities to score. However, Mainz were resilient and held up well against the pressure from the hosts. In the 22nd minute, however, the visitors finally broke through as Marco Reus scored his first goal for the club since joining from Bayer Leverkusen earlier this summer.

Reus's strike gave Dortmund the lead and they continued to dominate possession and create more chances. However, Mainz refused to give up and made a number of late charges towards the end of the half. It looked like the match could have ended in a draw until the second half, when Borussia Dortmund increased their lead.

The second half saw the home side continue to push forward and create more chances, but Mainz's defense remained strong and denied them from scoring again. In the 74th minute, though, the German champions finally got what they had been looking for - a goal to seal the win.

Adeyemi and Brandt were among the standout performers for Borussia Dortmund. The duo combined well to create many chances for their teammates, and their workrate was instrumental in securing the victory. Meanwhile, Mainz's goalkeeper, Stefan Frei, made several crucial saves to keep his team in the game.

Overall, it was a thrilling encounter between two of Germany's top teams. Borussia Dortmund showed their quality once again and proved that they are still one of the strongest sides in the Bundesliga. They now look set to secure a place in the UEFA Champions League next season, while Mainz will need to bounce back quickly if they want to avoid relegation.