Overview

• The 30-year-old signed a two-year extension that keeps him under contract until 30 June 2029.
• The club announced the deal on the stadium video board before the Bundesliga opener against Wolfsburg, drawing applause from fans.
• Chairman Holger Sanwald called the agreement a special message before Heidenheim's third top-flight season and praised Mainka's leadership on and off the pitch.
• Mainka arrived from Borussia Dortmund II in 2018 and established himself as captain and defensive linchpin.
• He has made 258 competitive appearances for Heidenheim, scoring 19 goals.