Viking Ryerson signed for
Viking from
Lyngdal IL in the summer of 2013. He got his breakthrough for the first-team in the
2016 season, when he played 18 matches in the league. Ryerson played primarily
right-back in those matches.
Union Berlin In July 2018, Ryerson joined
2. Bundesliga side
1. FC Union Berlin on a three-year deal until 2021. Following his club's promotion to
Bundesliga, he scored his inaugural goal in a 5–2 home defeat to
Bayern Munich on 30 October 2021 during the
2021–22 season. One month later, on 25 November, he scored his first goal in European competitions, securing a 1–0 away win over
Maccabi Haifa in the
Conference League.
Borussia Dortmund in 2023 On 17 January 2023,
Borussia Dortmund signed Ryerson to replace the injured
Thomas Meunier, with a contract until June 2026. One week later, on 25 January, he scored his first goal in a 2–1 away victory over
Mainz. In the following month, he made his
Champions League debut on 15 February in a 1–0 victory over
Chelsea in the round of 16 first leg. On 30 March 2024, he scored the second goal in a 2–0 away win over Bayern Munich, to be his club's first victory in
Der Klassiker since 2019 and the first win at
Allianz Arena in 10 years. On 13 February 2026, he provided four assists, all from
crosses, in a 4–0 win over
Mainz, becoming the fourth player in
Bundesliga history, as well as the second player in Dortmund history, after
Pascal Groß a year prior, to do so. ==International career==