
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 highlights of the 2-0 win at Olympiacos in the first leg of the play-offs of the UEFA Champions League 2025/26 league...
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The Werkself beat Olympiacos 2-0 in the 2025/26 UEFA Champions League play-off first leg to claim a crucial victory in the Greek capital. After a focused first-half display with a number of presentable chances, Patrik Schick crowned a textbook counter to hand the Werkself the lead on the hour (60’). The Czech rounded off his brace when he headed in from a corner just 144 seconds later. Bayer 04 maintained their lead with aplomb to achieve a good position for the return leg in Leverkusen.
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Bayer 04 and Olympiacos had only met twice before the current UEFA Champions campaign. After the encounter on Matchday 7 of this season’s league phase, the Werkself travel to face the Greek side for the second time in just four weeks for the knockout play-off first leg. The Black and Reds were dominant for large spells in mid-January but lost 2-0 after missing a number of presentable chances. The Werkself aim to do better on Wednesday night to “seize the chance for revenge,” as managing director sport Simon Rolfes put it. Here’s all you need to know ahead of the game in our matchday news.
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A bitter end to the fifth showdown of the 2025/26 VBL Club Championship as the #B04eSports team failed to take any points in the three remaining matches of the preliminary online round of the fifth and final showdown, missing out on the offline round. They can no longer take points in the overall table. Bayer 04 slipped out on the top eight, so direct participation in the final event for the German Club Championship is no longer possible, with Bayer 04 having to contest the play-offs.
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