Sebastian Hertner

Club career Early career Born on 2 May 1991 in Leonberg, Hertner started his career at the academy of KSG Gerlingen, before joining the academy of VfB Stuttgart in 2005. Over three years, he made 65 appearances for Stuttgart II, scoring once.

1860 Munich After a season at Schalke 04 II, Hertner joined 1860 Munich on a three-year contract. He made his debut for 1860 Munich, coming on as a half-time substitute for Grzegorz Wojtkowiak in a DFB-Pokal 4–3 penalties victory over 1. FC Heidenheim, following a 1–1 draw. Over the course of the 2013–14 season, he made 21 league appearances in the 2. Bundesliga, whilst he made just one league appearance in the 2014–15 season before leaving on loan. He made his debut for Aue on 6 February 2015 as a 65th-minute substitute in a 2–0 victory over RB Leipzig. Despite their relegation to the 3. Liga, it was announced he would join Aue on a permanent basis for an undisclosed fee, signing a one-year contract with the club after making 10 appearances during his loan spell there. He scored his first goal for the club and the second of his career on 15 August 2015; a late penalty in a 2–0 victory at home to Stuttgarter Kickers. Having been an integral part of the Aue team that would eventually win promotion back to the 2. Bundesliga come the end of the season, Hertner signed a two-year contract extension with Aue in February 2016, which would keep him at the club until the summer of 2018. During the 2015–16 season, he made 31 league appearances, scoring once. He made his competitive debut for Darmstadt on 5 August 2018, coming on as an 80th-minute substitute in a 1–0 win against Paderborn 07 in their opening game of the season. However, first-team opportunities for Hertner were limited and he made just five appearances in all competitions across the 2018–19 season, and played just twice during the 2019–20 season.

VfB Lübeck Hertner signed a one-year contract with 3. Liga side VfB Lübeck in September 2020. He transferred to Türkgücü München in June 2021.

Later career On 23 January 2022, Hertner joined BFC Dynamo and stayed there for half a year. He joined FC Teutonia Ottensen in September 2022, and transferred to ETSV Hamburg in summer 2024, alongside fellow Teutonia Ottensen players Tjorben Uphoff and Ridel Monteiro. He remained at the club until his death in December 2025.

International career Hertner appeared for the Germany under-18 team and the under-19 team, having made 14 appearances for the former and five for the latter.