Yen was a high school star back in
Private NanShan Senior High School and turned professional in 1995 with the
Tera Mars (later
Kaohsiung and
BCC Mars) in the
Chinese Basketball Alliance of Taiwan. As starting
point guard, he led the league in assists for the 1997–1998 season and was then ranked among the best and brightest next-generation backcourt players in Taiwan. He was also selected to the
Chinese Taipei senior basketball team from 1997 until 2003. Around the start of the 21st century, however, Yen Hsing-su started to suffer from a succession of
knee injuries. In his last appearance on the national team, Yen led the
FIBA Asian Championship in assists, signifying his ability to continuously compete at
Asia's highest level of basketball if free from injury. Yet, he decided to become a full-time entertainer after completing the first season (2003–2004) of the newly founded
Super Basketball League (SBL). This was presumably due to the chronic knee problem and, arguably, the success of his new
entertainment career following the airing of
My MVP Valentine, a basketball-themed TV drama he starred in while healing the initial knee injury in 2002. In 2007, Yen returned to basketball when he signed with
Yunnan Bulls in the
Chinese Basketball Association in
mainland China to play in the 2007–2008 season. As a starter, he averaged 8.1 points and 5.2 assists (3rd in the league) in 22 games. After the season, he returned to Taiwan to play for
Taiwan Beer in the SBL where he won his only club
championship title. In the ensuing 2009–2010 season, Yen once again joined the Chinese professional league to play for the
Shanghai Sharks. Currently, Yen is an assistant coach in
Brigham Young University–Hawaii and a sports commentator at
FOX Sports Taiwan. On July 5, 2023, Yen was named as the
chief operating officer of the
TaiwanBeer Leopards. On May 16, 2024, Yen awarded the
T1 League General Manager of the Year in
2023–24 season. ==Filmography (TV Dramas)==