Yang, 26, struck out 157 batters in 165 innings this season. He won award for the Korea Baseball Organization's top pitcher this season.
Yang is a left-hander with four pitches, including a fastball that he throws between 92 and 95 mph, according to Feinsand.
Under the posting system, MLB clubs will have four days to bid on the player after he is posted. The team with the highest bid will then have 30 days to negotiate a contract.
- Dan Gartland