The San Diego Padres signed Korean infielder Song Sung-mun to a $13 million contract, the club announced Tuesday. Song, 21, played second base and shortstop for the Kiwoom Heroes in the Korea Baseball Organization, posting a .311 batting average with 18 home runs across 132 games last season. The deal includes $8 million guaranteed with performance escalators tied to MLB service time.
Song becomes the third Korean position player currently under MLB contract, joining Toronto's Kim Hyun-soo and the Cubs' utility prospect Kim Kwang-hyun. The Padres guaranteed international bonus pool money in November to create cap flexibility, a move that now carries $4.7 million in present-value arbitrage after this signing. Song's Korea-side agent, Jae-won Park of Octagon Baseball, structured opt-out clauses at year three and year five, unusual leverage for a player without posting-system status.
The signing extends San Diego's Pacific Rim infrastructure investment, which began with the $280 million Yu Darvish acquisition in December 2022 and continued through last summer's coaching staff additions. The Padres now employ four Korean-language interpreters, second only to the Dodgers' five, and maintain full-time scouts in Seoul and Busan. Ownership group Seidler Equity Partners LP allocated $12 million annually to Asian scouting operations starting in 2023, triple the prior budget. That spend produces optionality: Song's KBO stats project to a 95 wRC+ MLB floor, replacement-level production at $1.9 million per win, but his youth and defensive versatility create upside if he reaches the 75th percentile aging curve.
The Korean broadcast angle matters more than the box score. Song's signing arrives six weeks before MLB's exclusive negotiating window with Korean broadcasters closes on April 15. Current rights packages with KBS and SPOTV expire after the 2025 season. San Diego games featuring Darvish drew an average 340,000 Korean television viewers last season, per Nielsen Korea, making Padres inventory the third-most valuable after Dodgers and Cubs programming. Adding Song creates a roster continuity hedge if Darvish, now 38, exits after his contract concludes in 2028. Sponsor activation follows the same logic: Hyundai Motor Group, which holds San Diego's international sponsorship category through 2026, renewed $8.4 million annually after Darvish's first season exceeded 180 innings pitched.
The middle-infield depth chart shifts immediately. Song slots behind incumbent shortstop Xander Bogaerts but ahead of 2024 Rule 5 pick Lee Jung-hoo, whose minor-league option was exhausted in September. General manager AJ Preller signaled last month that the club would explore trading utility infielder Graham Pauley, 26, whose $1.2 million arbitration salary now represents redundancy. Pauley's agent, Scott Boras, began shopping his client to American League clubs needing designated-hit depth, per two executives familiar with those conversations.
What happens next: Song reports to Peoria, Arizona, on February 14 for spring training. The Padres' Korean broadcast partner, SPOTV, will embed a production crew in camp for 12 days, creating content packages for offseason programming. Contract language requires Song to participate in six sponsor events annually, split between San Diego corporate partners and Seoul-based Hyundai activations. The club's analytics staff built a projection model using KBO-to-MLB translation rates from the past 15 years; internal forecasts estimate Song reaches the majors by late May, assuming he posts an OPS above .750 in Triple-A.
Meanwhile, two other Korean free agents remain unsigned: outfielder Choi Ji-hwan, 28, whose agent met with Texas officials in January, and reliever Park Se-woong, 31, whose showcase velocity declined to 91 mph last fall. Song's $13 million guarantee resets the market floor for position players without posting fees, complicating both negotiations.
The Padres' 40-man roster now stands at 39, leaving space for one pre-season addition. Ownership approved a $168 million competitive balance tax threshold for 2025, per filings reviewed by the commissioner's office, giving Preller roughly $11 million in remaining payroll flexibility before triggering penalties.