Between 2014 and 2016 Maas, who played for Arminia Bielefeld and Hertha Berlin in the Bundesliga plus MSV Duisburg in the second division, was assistant coach to the current Bayer 04 head coach Peter Bosz. They were in charge at Dutch club Vitesse Arnhem for a total of 62 games in the Eredivisie. “In Rob Maas, we’ve appointed an innovative and strong-minded assistant coach who fits in really well here. He knows the Bundesliga and has already worked successfully with Peter Bosz. Rob will provide new ideas,” declared sporting director Simon Rolfes.
For Rob Maas, Bayer 04 are “a highly ambitious and very attractive club. That’s not just the perception in Germany but Leverkusen also have an outstanding reputation across Europe,” said Maas. “To be able to work with fellow coaches in developing an extremely exciting team is a fantastic challenge I’m really looking forward to.”
Werkself-TV shows the highlights of the Bayer 04 women's 0-1 loss against TSG Hoffenheim on the 19th matchday of the Google Pixel Frauen-Bundesliga 2025/26.
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A proud anniversary: 2026 marks the 50th anniversary of the founding of the first Bayer 04 official fan club. The pioneers of the "First fan club 1976 Leverkusen" still hold their love for the club dear, black and red passion knows no expiry date. Read on to discover the development of organised fan culture at Bayer 04 and where it is practised around the country and the world.
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After a run of seven games unbeaten in all competitions, the Werkself suffered a 1-0 defeat at FC Union Berlin despite their best efforts. Captain Robert Andrich, who took responsibility for the goal, said after the match: "Now we have to focus on not losing our heads even in difficult situations. That has always made us strong in the past." The Werkself review.
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Werkself TV shows the highlights of Bayer 04's 0-1 loss at Union Berlin on Matchday 23 of the 2025/26 Bundesliga season...
