Posting Window For Hyeseong Kim Likely To Begin Next Week

It’s already widely known that the Korea Baseball Organization’s Kiwoom Heroes will post infielder Hyeseong Kim for major league teams this offseason. An exact timetable, however, hadn’t come into focus until today. Kim himself tells Jee-ho Yoo of South Korea’s Yonhap News Agency (X link) that he expects the posting to be formalized next week. He’s planning to travel to the United States early next week in advance of the process.

Kim, who’ll turn 26 in January, has long looked the part of an interesting entrant into the offseason free agent market. The former double-play partner of current big leaguer Ha-Seong Kim, he’s old enough and has enough experience in the KBO to be considered a “professional” under Major League Baseball’s international free agent parameters. That allows him to sign a major league deal of any length and for any amount (unlike, say, NPB star Roki Sasaki, who’ll be limited to a minor league deal with a bonus that falls within the guidelines of MLB’s hard-capped international amateur system).

The left-handed-hitting Kim has turned in four straight above-average seasons at the plate in the KBO, batting over .300 with an on-base percentage of at least .372 in each of those four seasons. He’s light on power but did connect on a career-high 11 home runs this past season, adding in 26 doubles and four triples. Hitting the ball over the fence has never been Kim’s calling card, however. He’s developed into a KBO star due to his outstanding bat-to-ball skills, plus speed and plus glovework. Over the past four seasons, he’s swiped 135 bases in 155 attempts (87.1% success rate) and lowered his strikeout rate each season, culminating in just a 10.9% strikeout rate in 2024.

Overall, Kim carries a .321/.381/.418 over the past four seasons, including a .326/.383/.458 batting line this past season. He’s regarded as a plus defensive second baseman who can handle shortstop and has ample experience at both positions. The Mariners have already been linked to Kim, and he ought to command a fair bit of interest from other teams once his free agency begins in earnest. The A’s, Royals, Pirates, Braves, Yankees and Brewers make varying levels of sense as speculative fits.

Once the Heroes formally post Kim, it will open a 45-day window during which he and his representatives at CAA Baseball can negotiate freely with all 30 major league teams. Any team that signs Kim will be paying not only the agreed-upon guarantee to the player himself, but a formal posting/release fee to the Heroes. That fee, which is in on top of the contract, is equal to 20% of the contract’s first $25MM, plus 17.5% of the next $25MM and 15% of any dollars thereafter. Additional earnings, such as performance bonuses/incentives or salaries on option years fall under that purview once they are unlocked or exercised.