[1][2] Park qualified for the men's 200 m backstroke, as South Korea's youngest male swimmer (aged 17), at the 2012 Summer Olympics in London, by clearing a FINA B-standard entry time of 2:00.53 from the Dong-A Swimming Tournament in Ulsan.

[3] He challenged seven other swimmers on the second heat, including three-time Olympian and European short course champion Aschwin Wildeboer Faber of Spain.

Park edged out Ukraine's Oleksandr Isakov to take the seventh spot by 0.28 of a second in 2:01.50.

Park failed to advance into the semifinals, as he placed thirty-first overall in the preliminary heats.

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