[3] While at university, he gained the interest of notable local and Japanese top-flight clubs but was not offered a contract after medicals revealed a back injury.

[4] Park started his professional career by joining J2 League club Mito HollyHock in 2008 after recovering from his back injury.

[5] He advanced to the top division after his debut season, and won the 2009 J1 League and the 2010 J.League Cup with Kashima Antlers and Júbilo Iwata respectively.

[6][7] On 25 June 2011, Swiss Super League club Basel announced that Park had signed a four-year contract with them.

To the beginning of their 2011–12 season Park was a member of the Basel team that won the 2011 Uhrencup, beating both Hertha Berlin 3–0 and West Ham United 2–1 to lead the table on goal difference above Young Boys.

[12] He also contributed to the team's 1–0 first-leg victory over Bayern Munich in the round of 16 by stopping Arjen Robben successfully.

Park played in the first leg, but Chelsea won both games advancing 5–2 on aggregate and eventually winning the competition.

[16] Park scored his first goal for the club on 21 April 2013 in the away game at the Stockhorn Arena as Basel played a 2–2 draw with Thun.

[18] In the 2012–13 Swiss Cup Basel reached the final, but were runners up behind Grasshopper Club, being defeated 4–3 on penalties, following a 1–1 draw after extra time.

[22] He played 27 matches as a left-back or a central midfielder for Mainz in the 2013–14 Bundesliga, and cooperated with them in qualifying for the Europa League.

On 28 May 2014, Park was selected for the South Korean squad for the 2014 FIFA World Cup to replace injured player Kim Jin-su.

[35] His gold medal allowed him to be exempted from the two-year mandatory military service and continue his career in the Bundesliga.

[44] After previously keeping his family out of the spotlight, Park and their oldest two children joined the cast of The Return of Superman in 2018.