Phil Thierri Sieben (born 20 June 1999) is a German professional footballer who plays as a midfielder for Regionalliga Nord club Eintracht Norderstedt.
[6] He made his debut for Fortuna Düsseldorf II in the Regionalliga West on 12 September 2020, starting in a 4–0 home win over VfB Homberg.
Bundesliga for Fortuna Düsseldorf on 23 October 2021 in a 3–1 win over Karlsruher SC, coming on as a substitute for Marcel Sobottka.
[12] Sieben joined Eerste Divisie club Roda JC on 10 June 2022 after he had been scouted by Toine van Mierlo.
[13][14] Sieben made his debut in the Eerste Divisie for Roda in a 2–0 win against FC Dordrecht on 5 August 2022.