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.”
Bayer 04 host RB Leipzig at the BayArena on matchday 4 of the 2026/27 Bundesliga season. The game is on Sunday 20 September with the kick-off at 15:30 CEST. The latest information on ticket sales.
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Bayer 04 host SC Freiburg at the BayArena on matchday 6 of the 2026/27 Bundesliga season. The game will be played between 16 and 18 October. The exact kick-off time has yet to be confirmed. The latest information on ticket sales.
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With the European season ticket, fans can follow and support the Werkself on the European stage during the 2026/27 season – and are guaranteed a ticket and a seat for every UEL home match at the BayArena, right up to and including a potential semi-final. In addition, holders of the European season ticket save 20 per cent on each UEL ticket.
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A successful end to pre-season! In their seventh and final friendly of the summer, the Werkself won 2-1 at Newcastle United. After Ibrahim Maza scored inside the first minute, the Magpies equalised shortly before the break. Bayer 04's attacking endeavours in the second half were rewarded in the closing stages through substitute Victor Boniface, making it six wins from seven games in pre-season.
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Bayer 04 Women warmed up for the start of the Bundesliga season with an emphatic 7-0 victory over Belgian top-flight club Standard Liège on Saturday afternoon. Over four periods of 30 minutes, Cornelia Kramer, Lilla Turanyi and Valentina Mädl each netted a brace for the dominant Werkself, after Loreen Bender had opened the scoring. Roberto Pätzold's side kick off their league campaign at RB Leipzig in eight days.
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