SEE ALSO: Sung Si Kyung reveals struggles with unfair contract as a rookie

During the match between the 'Our Neighborhood Arts and Physical Education' team and Suwon tennis team, Sung Si Kyung is said to have surprised everyone with his serve which was executed with a power and speed that rivals that of professional tennis players.

The show's rep stated, "Sung Si Kyung is easily the best member of the 'Our Neighborhood Arts and Physical Education' tennis team with his ambition in tennis... Whether it's raining or there's clear skies, he goes to Chuncheon where coach Lee Hyung Taek lives more than twice a week and does countless tennis practice sessions, leaving even coach Lee Hyung Taek speechless with his amazing effort."

Catch Sung Si Kyung's tennis skills on the 9th at 11:10 PM KST!