
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.”

Special events for a special match: Bayer 04 are offering fans a varied programme of events at tonight’s home game in the Google Pixel Women’s Bundesliga against German champions Bayern Munich (kick-off: 18:00 CEST). Alongside a number of interactive activities, events to mark the DFB Sustainability matchday are also planned around the Ulrich Haberland Stadium. Read on in the matchday news ahead of the clash with FC Bayern.
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Following two close encounters against VfL Wolfsburg and away to TSG Hoffenheim, the Bayer 04 Women face another top side on Monday night. The Werkself host German double winners Bayern Munich at the Ulrich Haberland Stadium at 18:00 CEST to round off matchday 4 in the Google Pixel Women’s Bundesliga. Head coach Roberto Pätzold is counting on another spirited performance from his team.
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After the 2-2 draw at FC Augsburg on Matchday 3 of the 2026/27 Bundesliga season, Edmond Tapsoba and Christian Kofane spoke to Werkself-TV...
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Werkself TV shows the highlights of Bayer 04's 2-2 draw at FC Augsburg on Matchday 3 of the 2026/27 Bundesliga season...
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