Ryu Seung-woo

Bayer Leverkusen

Although Ryu signed his first professional contract with Jeju United from the K League on 6 November 2013 as a free agent, only a month later, without playing a single professional game in K-League, the Korean club loaned him out to Bayer Leverkusen for the purpose of his professional development. Before moving to Bundesliga, Ryu showed his credentials on the international stage, scoring a couple of goals to help South Korea into the knockout round of the 2013 FIFA U-20 World Cup in Turkey. Ryu grabbed his first goal for Bayer Leverkusen in the second half of an hour-long friendly against Dutch side SC Heerenveen. Bayer Leverkusen's skipper Simon Rolfes praised Ryu for his "intelligent play, good movement and use of space." On 25 January 2014, Ryu made his first official Bundesliga debut against SC Freiburg, substituting his South Korean compatriot Son Heung-Min in the second half. Unfortunately, the game ended in a 3–2 defeat for Leverkusen.

Eintracht Braunschweig (loan)

On 15 August 2014, Ryu joined Eintracht Braunschweig on a half-season long loan to replace the injured Jan Hochscheidt. The loan spell was extended for another six months in December 2014.

Arminia Bielefeld (loan)

He was loaned to Arminia Bielefeld on 1 February 2016.

Ferencváros (loan)

He was loaned to Ferencvárosi TC on 1 August 2016.

Return to Jeju united

In July 2017 Ryu signed again with his boyhood club Jeju United.

Ryu plays in the South Korea U20 football team. He was called up for South Korea's 21-man squad for the 2013 FIFA U-20 World Cup in Turkey, and scored the winning goal against Cuba in the side's opening match of the tournament. On 24 June 2013, Ryu netted an equalizer in South Korea's 2–2 draw against Portugal. On 27 June 2013, Ryu was injured and substituted during South Korea's final game of the group stage against Nigeria, forcing him to miss out their Round of 16 match against Colombia, and subsequently, their quarter-final loss against Iraq.

South Korea U20

AFC U-19 Championship: 2012