[5] After playing a few matches with Borussia Dortmund II in the Regionalliga, Ducksch scored seven goals in five consecutive games scoring braces each against Fortuna Köln, SV Elversberg and single goals against Mainz 05 II, 1.

In the 2012–13 season, Ducksch made his professional football debut on 3 August 2012 in a Borussia Dortmund II match against Alemannia Aachen in the 2012–13 3.

Liga season,[7][8] and on 18 May 2013, Ducksch scored the only goal in Borussia Dortmund II's 1–0 away victory against the second team of VfB Stuttgart.

[13][14] In June 2018, Ducksch joined Fortuna Düsseldorf, newly promoted to the Bundesliga, on a four-year contract.

[13] After only one year at Düsseldorf, it was confirmed on 28 June 2019, that Ducksch had joined Hannover 96 on a three-year contract.

[20] Ducksch was called for the first time with the Germany national team for the friendly matches against Turkey and Austria on 18 and 21 November 2023, respectively.