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.”
From the 2027/28 season, the Women’s Bundesliga will be organised by an independent league association. Following the unanimous decision taken at the DFB Bundestag (national conference) on Friday afternoon, the league’s separation from the DFB is now official.
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Following the Bundesliga clash against RB Leipzig (Sunday, 20 September, 15:30 CEST), some of the Werkself first team players will be heading off for the first international break of the season. Here is an overview of the Bayer 04 players called up for their national teams and all the details of their upcoming matches.
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A special visit to the BayArena: 222 members from volunteer fire brigades in Leverkusen, the Rheinisch-Bergisch district and the Oberbergisch district watched the Werkself’s 2–0 home win over Slovenian champions NK Celje live in the stadium. Bayer 04 had invited them to the 2026/27 Europa League opener as a thank-you for their tremendous dedication. They watched the match together in Block F4.
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The Werkself were feeling quite satisfied following their 2–0 home win in their opening match of the 2026/27 UEFA Europa League, particularly with the result. At the same time, players and coaches agreed that, in terms of their performance, there was “still room for improvement”, as Robert Andrich put it. For his part, Moussa Diaby emphasised the importance of the victory with which the team had kicked off the campaign, and spoke personally about how good it felt to have started in front of the “wonderful” Bayer 04 fans this Tuesday evening for the first time since his return. The Werkself review of the Europa League opener.
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