Chang Won-jun
Pitcher
Born: (1985-07-31) July 31, 1985 (age 39) Seoul, South Korea
Batted: Left Threw: Left
KBO debut
2004, for the Lotte Giants
Last KBO appearance
October 17, 2023, for the Doosan Bears
KBO statistics
Win–loss record	132–119
Earned run average	4.28
Strikeouts	1,385
Teams
Lotte Giants (2004–2014) Doosan Bears (2015–2023)
Medals Men's baseball Representing  South Korea 2015 WBSC Premier12 2015 Tokyo Team

Chang Won-jun (Korean: 장원준; Hanja: 張元準; born July 31, 1985) is a South Korean pitcher who played for the Doosan Bears of the KBO League.

He joined the Lotte Giants in the first draft in 2004, and played for the team between 2004 and 2014. On November 26, 2014, he declared it to be in the free agent market on the expiration of its preferential negotiation. After that, he signed an agreement with the Doosan Bears on November 29, 2014.

Chang represented South Korea at the 2017 World Baseball Classic.^[1]

Year	Venue	Competition	Team	Individual statistics
2007	Chinese Taipei	Baseball World Cup	5th	1–1; 2.12 ERA (3 G, 17.0 IP, 4 ER, 15 K)

• Career statistics and player information from the KBO League

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