
Born and raised in Bockholtz in the Netherlands on the border to Germany, Mark Flekken joined Alemannia Aachen from Roda JC Kerkrade at the age of 16. Starting in the youth section at the then second division club, his career progressed and he signed his first professional contract in September 2011. The tall shot-stopper became the first choice keeper for the senior side from the winter break in the third division in the 2012/13 season. At the end of that campaign he joined SpVgg Greuther Fürth where he made just three second division appearances in three years.
He then became the first choice keeper at third tier MSV Duisburg in 2016/17 – where he made a historical contribution: On 7 August 2016, Flekken scored the equaliser at 1-1 with a backheel in added time in the league match at VfL Osnabrück. It was the first goal from open play scored by a keeper in the history of MSV Duisburg. The season ended with MSV gaining promotion to Bundesliga 2 as champions.
After two seasons with more than 30 appearances each, Flekken signed for Bundesliga club SC Freiburg in 2018/19 and he made his Bundesliga debut on the last matchday of the season. After the departure of Alexander Schwolow in 2020/21, he became the SCF number one but then suffered an elbow injury that kept him out of action for almost the rest of the season.

The next two years were significantly better for the talented Dutchman and he came to the attention of the Netherlands coach Louis van Gaal. Flekken made his debut for the Oranje in March 2022 and he has since made another seven appearances in Euro qualifiers, the UEFA Nations League and friendlies. He was also in the squad for Euro 2024.
Flekken then played for Freiburg in the DFB Pokal final in 2021/22 (in a 4-2 defeat on penalties to RB Leipzig) and in 2022/23 he played for SCF in the Europa League. With more than 30 league appearances each season and impressive appearances, Flekken attracted the attention of Premier League club Brentford after five years at Freiburg.
The new Leverkusen player only missed one league game for the London side in 2023/24 and 2024/25. The 31-year-old now joins Bayer 04 with the experience of 80 Bundesliga and 74 Premier League appearances.

Flekken has two World Cup qualifiers for the Netherlands against Finland and Malta before his summer break.

Bayer 04 Leverkusen will to have manage without forward Eliesse Ben Seghir. The Morocco international suffered a ligament injury in his left ankle before the AFCON final defeat against Senegal (0-1 a.e.t.).
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The VBL Club Championship 2025/26 continues. Tonight, 27 January (live on Twitch and on the Bayer 04 app from 18:00 CET), the Leverkusen eSports team will play the remaining three matches in the online preliminary round of Showdown Four. They are up against FC Kaiserslautern, SC Freiburg and the current club champions and Showdown Three winners RB Leipzig, with whom Bayer 04, club runners-up and Showdown One winners, shared some memorable moments, especially last year. The lowdown on our next opponents.
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Bayer 04 Leverkusen have signed Swiss goalkeeper Jonas Omlin from Borussia Mönchengladbach. The 32-year-old joins the Werkself from the Lower Rhine Bundesliga club on loan to the end of the current season. This is the reaction of Bayer 04 to the injury to first choice keeper Mark Flekken, who faces a long spell on the sidelines.
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Welcome to Leverkusen, Jonas Omlin. Bayer 04 have signed the 32-year-old goalkeeper on loan from Bundesliga side Borussia Mönchengladbach until the end of the season. Managing director sport Simon Rolfes described the Swiss shot stopper, signed by the Werkself in reaction to the long-term absence of first choice keeper Mark Flekken, as an "internationally experienced keeper." Bayer04.de takes a closer look at the new signing, who will wear the number 18 jersey.
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Lucas Vázquez was the hero in Saturday's 1-0 home win against Werder Bremen, when the Spaniard scored his first Bundesliga goal to secure an important victory for Leverkusen. The 34-year-old right-sided recently met up with the Werkself magazine for an interview in the Düsseldorf restaurant Casa Galicia after the first few months of settling in to his new home in Germany. Over tapas, the five-time Champions League winner, who left Real Madrid in the summer after 18 years to continue his career at Bayer 04, spoke about his career to date, the new challenge in Leverkusen and the importance of family - and he paid a big compliment to the fans of his new club.
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