
Jonathan Tah and Co. split up into groups of three for the day working in the Werkstatt, the Bayer 04 rehab and training centre at the BayArena, on a range of tests and checks. That included taking blood and measuring body fat as well hip strength measurements plus different diagnostic procedures to test coordination, mobility and stability.





Before clocking off, the Werkself players underwent spiroergometry to finish off. Wearing respirator masks, the players were put through their paces as they clocked up as many miles as possible on the treadmill to test their stamina levels.






The squad led by head coach Xabi Alonso return to the training ground for the first time on Friday 2 December. The first session with the ball starts at 10.30 CET on training pitches 1 and 2. The Alonso team have a second training session in the afternoon at 14.30 CET.
Both sessions are open to Black and Red fans but last-minute changes are possible.

Strengthening the Bayer 04 Leverkusen youth teams: Konstantinos Kotsifakis will join the Werkself from Bundesliga 2 club Hertha Berlin for the 2026/27 season, where he will be a permanent member of the Leverkusen U19 coaching set-up. The German-Greek will also take on an operational role in coaching the Bayer 04 Future Team. The 29-year-old was most recently head coach of the U17s at Hertha Berlin.
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Another award for the Bayer 04 head groundsman and staff: After coming top in the 2021/22, 2022/23 and 2024/25 seasons, the BayArena pitch came second in the Bundesliga Pitch of the Year ranking for the 2025/26 season. VfL Wolfsburg secured the top spot this year, with TSG Hoffenheim in third place.
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Opening opponents, derby weekends, the opponents in the season finale: This information and more will be available to Bayer 04 fans on Thursday, 2 July, when the 2026/27 Bundesliga fixture list is published.
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The next footballing highlight is just around the corner: the 2026 FIFA World Cup, the 23rd edition of the tournament, will be held in the USA, Canada and Mexico and feature 48 teams for the first time. Bayer04.de has all the latest on the Werkself players called up to represent their countries.
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While the majority of the Bayer 04 Women are enjoying their summer break, nine Werkself players will be on duty for their national teams in the coming days. Three of them are competing for a place at the World Cup, while six are involved in two friendlies with the Germany U23 team.
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