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.”
Four Bayer 04 players are in action at the 35th edition of the Africa Cup of Nations being played in Morocco from 21 December to 18 January 2026: Eliesse Ben Seghir for the hosts, Edmond Tapsoba with Burkina Faso, Ibrahim Maza for Algeria and Christian Kofane with Cameroon. Updates on the AFCON matches involving Werkself players...
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Bayer 04 Leverkusen will have to manage without goalkeeper Mark Flekken and forward Nathan Tella for the time being.
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After a week in the Algarve, the Bayer 04 Women returned home on Saturday afternoon. The Werkself had six training sessions, two friendlies and a lot of time together as a team. Roberto Pätzold's team will be back in action in the Google Pixel Women's Bundesliga next Friday for the start of matchday 15.
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"We didn’t make the right decision at the right moments," said captain Robert Andrich after the 1-0 defeat away to TSG Hoffenheim, where Bayer 04 endeavoured to control the game but failed to score. The Werkself also had two enforced substitutions due to injuries. Nevertheless, the coach, captain and debutant Janis Blaswich are positive about the coming weeks. The Werkself review.
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Werkself TV shows the highlights of Bayer 04's 0-1 loss at TSG Hoffenheim on Matchday 18 of the 2025/26 Bundesliga season...
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