Dennis Diekmeier

Early career

Diekmeier was born in Thedinghausen, Lower Saxony, and grew up in Achim, where he attended school alongside fellow future Werder Bremen player Felix Wiedwald. Diekmeier started playing football at TSV Bierden and later played at TSV Verden before moving to the youth department of Werder Bremen in 2003. For the 2008–09 season, he was promoted to the second team of Werder Bremen, who competed in the 3. Liga. At the same time, Diekmeier was also included in the first-team squad. He was mostly employed as a midfielder during his time at Werder.

1. FC Nürnberg

In January 2009, Diekmeier moved to 2. Bundesliga side 1. FC Nürnberg, where he appeared in all matches during the second half of the season as well as in both relegation play-off games. kicker subsequently placed him as the third best full-back of spring season in their post-season awards. On the first matchday of the 2009–10 Bundesliga, Diekmeier was voted into the "Starting XI of the Day" for kicker-magazine. Eight rounds into the competition, Diekmeier was the only Nürnberg player who had played eight full games, alongside goalkeeper Raphael Schäfer. In the final training session before the ninth match-round, however, he suffered a severe allergic reaction and was treated after an emergency helicopter flew in. Nevertheless, it was decided that Diekmeier was fit to play. However, two hours before the start of the game he was suspended due to one of his medications being on the doping list.…

He was part of the Germany team that won the 2008 European U-19 Championship.

After retiring from playing, Diekmeier began his coaching career at SV Sandhausen, where he was appointed assistant coach to Sreto Ristić ahead of the 2024–25 season. From January 2025, he continued in the role under Ristić's successor, Kenan Koçak. In early April 2025, Koçak resigned as head coach, after which Diekmeier was appointed interim manager for the remainder of the season, working alongside Gerhard Kleppinger, who held the required UEFA Pro Licence. At the time of his appointment, Sandhausen were involved in a relegation battle and ultimately finished the season in the relegation zone, confirming their relegation to the Regionalliga Südwest. Despite the league outcome, the club won the Baden Cup in the final competitive match of the season, securing qualification for the following season's DFB-Pokal. Ahead of the 2025–26 season, Sandhausen appointed Olaf Janßen as head coach, with Diekmeier initially remaining on the coaching staff. He was later granted a leave of absence from his duties for family reasons.

Diekmeier is married to Dana Diekmeier, whom he met in Bremen. The couple married in May 2010 and have four children. In early 2025, their eldest daughter was diagnosed with a serious illness, leading Diekmeier to take a temporary leave from his professional responsibilities. Members of the family have since spoken publicly about the experience and have supported cancer-related awareness and charity initiatives, including appearances connected to professional football events. The Diekmeier family also operates a YouTube channel, Team Diekmeier.