
The goalkeepers Lennart Grill and Niklas Lomb plus homegrown player Emrehan Gedikli formed the first group of three at the performance tests at the BayArena on Monday morning. Another 13 senior players plus seven youth players followed over the course of the day. There were the usual warm greetings after the summer break with everybody in a buoyant mood and full of anticipation ahead of the forthcoming tasks.

Anticipation ahead of the performance tests was kept within bounds as Dr. Malte Krüger knows from previous years. “We are aware this day is not necessarily the most popular. (He laughs) It is a real workout as the tests last longer than a normal training day,” said the head sports scientist at Bayer 04. “But the players know the importance of this day and they see we gain important knowledge that relates to their physical condition and also benefits them and their health and fitness in the pre-season.”
Dr. Krüger also explained why he believes the performance tests have to be completed before the first session on the training ground. The 39-year-old: “On the one hand, the players come here after several weeks of individual preparation, on the other we want to identify possible deficits before the dynamic sessions on the pitch instead of afterwards.”
The Werkself players went through ten different tests in succession on Monday with the whole procedure lasting three hours for each player. Nadiem Amiri and Co. spent two thirds of the time with medical checks. They are partly prescribed by the German Football League (DFL) with Bayer 04 also carrying out additional tests. The checks include organ tests, sight tests, a dental examination, an ECG plus neurological investigations.






The traditional performance tests followed. On top of that there are strength tests on hip muscles, flexibility tests and stamina diagnostic tests – the so-called spiroergometry on a treadmill. “Players are tested to the limit without pain,” said Dr. Krüger. The tempo is increased in a five-minute rhythm with some players covering a distance of more than six kilometres at a speed of 20 kmph.
To deal with the majority of the tests on one day, several external experts are involved including the German Sports University (Spoho) in Cologne, and Bayer 04 have worked with them on the performance tests for several years.
Working with the club’s sports scientists, team doctors, fitness coaches and physiotherapists, the tests can provide basic conclusions for course of the season. “The investigations we complete each year are obviously very comprehensive and involved. But we gain important knowledge that enables us to assess the players’ development, reveal deficits and do preventive work.”

For the second time in four days, Bayer 04 face Borussia Dortmund this Tuesday evening, 2 December (kick-off: 21:00 CET) - this time in the round of 16 of the DFB Pokal, with more than 7,000 fans supporting the Werkself at Signal Iduna Park. After the recent 2-1 defeat to BVB in the league, several cup stats provide hope of revenge for the Black and Reds. There are several reasons why Bayer 04 recommends getting to the round of 16 clash early, in which VAR will be in use, unlike in the previous rounds. Read on for further information on tonight’s game in our matchday news.
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Just three days on from the Bundesliga meeting in Leverkusen, Bayer 04 now visit Borussia Dortmund in the DFB Pokal on Tuesday (21:00 CET). Ahead of the game at the Signal Iduna Park, head coach Kasper Hjulmand spoke about how to approach this second encounter in 72 hours and a number of developments within the squad.
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Werkself TV shows the highlights of Bayer 04's 2-1 loss to Borussia Dortmund on Matchday 12 of the 2025/26 Bundesliga season...

Bayer 04 were beaten 2-1 at home by Borussia Dortmund on Matchday 12 of the 2025/26 Bundesliga season. Although the Werkself had more of the play in the first half, the visitors went ahead through Aaron Anselmino. Karim Adeyemi doubled their advantage after the hour, but Christian Kofane gave Leverkusen late hope, although ultimately to no avail.
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There won’t just be plenty of excitement on the pitch as Bayer 04 host Borussia Dortmund at the BayArena at 18:30 CET on Saturday. Outside the stadium there will be collection points for food donations to the Leverkusen Foodbank, which will also benefit from the profits of a jersey raffle in the Fanwelt afterwards. There will also be a minute’s silence before kick-off following the passing of long-time Werkself player Dieter Herzog, before two fan clubs are honoured for their decades-long support at half-time and fans receive a talk about Orange Day, the International Day for the Elimination of Violence against Women. Here’s all you need to know ahead of the game in our matchday news.
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