Hannover 96 Anton played eleven matches for
Hannover 96 II and scored one goal. Since
Hannover 96 were in
relegation, Anton and
Mike-Steven Bähre were signed to professional contracts to help the club. in 2016 During the 2015–16 season, Anton made two appearances for
Hannover 96, playing in a 2–1 win against
VfB Stuttgart on 27 February 2016 and a 1–0 loss against
Eintracht Frankfurt on 19 March 2016. His first Bundesliga goal was against
Borussia Mönchengladbach on 15 April 2016.
VfB Stuttgart On 28 July 2020, Anton transferred to
VfB Stuttgart on a four-year deal. On 5 November 2021, he extended his contract until 2025. in 2022 Anton became the team captain of VfB Stuttgart in August 2023 and extended his contract until 2027 on 14 January 2024. On 4 May 2024, the final matchday of the
Bundesliga season, Anton would help his side win 3–1 over
Bayern Munich, thus finishing Bundesliga runner-up behind champions
Bayer Leverkusen.
Borussia Dortmund On 8 July 2024, Anton joined fellow Bundesliga club
Borussia Dortmund, signing a four-year contract, for a reported transfer fee of €22.5m, as a replacement for
Mats Hummels, who left the club in the same summer. The transfer has caused major controversies among Stuttgart supporters, since Anton declared his loyalty towards the club four months earlier. On 17 August 2024, Anton made his Dortmund debut in the first round of the
DFB-Pokal against
Phönix Lübeck, scoring three minutes into the match, and thus his first goal. On 18 September, he'd celebrate his
European debut coming on as a substitute in a 3–0 away victory over
Club Brugge, on the first matchday of the
Champions League league phase. On 1 October, he'd feature in the starting line-up in the Champions League for the first time, in a 7–1 home win over
Celtic Glasgow. On 8 February 2025, Anton scored an
own goal for his former club VfB Stuttgart in a 2–1 loss. On 12 April, he scored his first
Bundesliga goal for Dortmund away in
Munich, to tie the game 2–2 and secure a point for his team. Three days later, he'd play full 90 minutes in a 3–1 home victory over
FC Barcelona, in the quarter-final of the
Champions League, though his side was eliminated. On 26 April, he'd score the winning goal for Dortmund in the sixth minute of extra time in a 3–2 away victory over
Hoffenheim, climbing up to the sixth place of the league table, making a crucial step towards
Champions League qualification for the following season. On the last matchday, he would help his team win 3–0 against
Kiel and qualify for the Champions League. In the first matchday of the following
Bundesliga season, he'd score a goal in a 3–3 draw over
St. Pauli. On 5 November 2025, he'd score Dortmund's only goal in a 1–4 away loss to
Manchester City, marking Dortmund's first defeat of the
Champions League season. On 4 April 2026, Dortmund would win 2–0 against
VfB Stuttgart away, marking Anton's first victory with Dortmund over his ex-club after three winless matches in a row. ==International career==