Jeong Keun-woo is a former second baseman and shortstop who last played for the SK Wyverns, Hanhwa Eagles, and LG Twins in the Korea Baseball Organization. He bats and throws right-handed.

Amateur baseball players go up against legendary pros in a championship to determine the ultimate winning team....

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Competitors are given elaborate masks to wear in order to conceal their identity, thus removing factors such as popularity, career and age that could lead to prejudiced voting. In the first round, a pair of competitors sing the same song, while in the second and third rounds they each sing a solo song. After the First Generation, the winner of the Third Round goes on to challenge the Mask King, and is either eliminated or replaces the previous Mask King through live voting. The identities of the...