Koo, who has been the commissioner since August 2011, will wrap up his tenure at the end of this year.

The KBO said it will formally report Chung's election to the Ministry of Culture, Sports and Tourism, and schedule Chung's inauguration ceremony after further discussions.

Chung served as prime minister from 2009 to 2010. An economics scholar and professor emeritus of Seoul National University, Chung is also a well-known fan of baseball. Chung has previously said he'd one day like to become the KBO commissioner.

Chung is the 13th commissioner of the KBO, which was founded in 1982, and the first ex-prime minister to take the helm. His predecessors have mostly been former Cabinet ministers and corporate executives.

Chung's love for baseball has been well known. He has been frequently spotted at Jamsil Stadium in Seoul attending homes games of his favorite club, the Doosan Bears, and he also threw out the ceremonial first pitch at Rogers Centre, home of the Toronto Blue Jays, in 2012.

Chung has provided radio commentary on KBO games and penned opinion pieces on baseball for a local sports newspaper. In 2013, Chung published an essay titled "An Ode to Baseball," his attempt at portraying baseball as a metaphor for life. (Yonhap)