나고야 돔
On April 6, 1996, Sun made his NPB debut against Hiroshima Carp in Nagoya Dome, appearing in the 9th inning during the save situation, but got a blown save. During his inaugural NPB season, Sun struggled to adjust himself to Japanese style of play, and was sent down to the reserve team of the Dragons several times. He finished the worst year of his career with only 3 saves and a 5.50 ERA, never garnering more than mop-up duties.