Park is the top-ranked men's singles player in South Korea and has succeeded at an international level, winning individual medals at both the 2010 World Championships and the 2010 Asian Games.

In 2005, Park won the Indonesia International and then competed at the 2007 BWF World Championships in the men's singles division; for the latter, he was defeated in the third round by Chen Yu, of the China, with a final score of: 15–21, 21–16, 21–15.

During this year, Park won the Badminton Asia Championships and the Korea International Challenge titles, beating China's Chen Jin (21–18, 21–18) and South Korean, Lee Cheol Ho (21–14, 21–13) respectively.

Park entered the Proton Malaysian Open, held in January, and played the world number one-ranked player at the time, Lee Chong Wei, in the final—Park lost with a score of 14–21, 13–21.

The following week, Park joined the Korea Open Super Series and was again stopped by the number-one seed, Lee Chong Wei of Malaysia, with a score of 21–18, 7–21, 16–21 in the quarter-final match.

A week later, Park joined the Djarum Indonesia Open Super Series and lost to the world number one, Lee Chong Wei, 9–21, 13–21, in the quarter-final match.

Two months later, Park entered the Chinese Taipei Grand Prix Gold Open, which is held in the last week of August, and was beaten by Muhammad Hafiz Hashim from Malaysia, 15–21, 18–21, again in the quarter-final match.

Park entered the Super Series tournament of the Korea Open, which is held in January, and was eliminated in the quarter-final stage by Denmark's Peter Gade, 21–17, 16–21, 20–22.

In the individual match section of the Asian Games, Park faced Lin Dan in the semi-finals and was defeated 14–21, 10–21, winning a bronze medal for Korea.