Padres Sign Sung-Mun Song

December 22nd: The Padres officially announced their signing of Song today. The deal is actually a four-year pact worth $15MM, as per Ronald Blum of the Associated Press, with the fourth year existing as a player option for Song.  There is also a $7MM mutual option for the 2030 season with a $1M buyout.  Song will get a $2.5MM salary in 2026, $3MM in 2027, $3.5MM in 2028, and (if he doesn’t opt out) $4MM in 2029.  The Padres will also pay Song a $1MM signing bonus broken up into a $500K installment in January, and then the other $500K coming in January 2027.

Song would also receive a $1MM bonus for winning NL Rookie of the Year honors, and there is a salary escalator if he achieves a top-five finish in MVP voting.  The Heroes will receive a $3MM posting fee from the Padres, representing the standard 20% posting fee attached to any contract worth $25MM or less for a KBO League player.

December 19th: The Padres are in agreement with infielder Sung Mun Song on a contract, according to a report from Robert Murray of FanSided. According to Francys Romero of BeisbolFR, it’s a three-year deal that guarantees Song around $13MM.

Song, 29, has broken out in a big way over his last two seasons playing for the KBO’s Kiwoom Heroes. After typically being a slightly below average hitter by that league’s standards in the early years of his career, Song exploded with a .340/.408/.518 (143 wRC+) slash line across 602 plate appearances during the 2024 season. He flashed 20/20 potential at the plate and walked at a career-high 10.6% clip while primarily playing third base for the Heroes. He followed up on that season with an even better year in 2025, as he slashed .315/.387/.530 (151 wRC+) with 26 homers, 25 steals, and 37 doubles in 646 trips to the plate.

Those dominant back-to-back campaigns in the KBO league were enough to convince Song to try his hand in the majors, and the Heroes made Song’s goal a reality when they posted him for MLB clubs last month. That opened a 30-day window (set to close on the 21st of December) for Song to negotiate with MLB clubs. Song has typically been viewed by scouts as a step below MLB Gold Glove winner Ha-Seong Kim, the best South Korean player to make the jump to the majors in recent years, and there’s been some debate about whether he’s more of a utility player or a proper starter at the big league level.

Song’s reported price tag is certainly affordable enough for the Padres to stomach in the event he’s more of a bench piece than a regular. A multi-year pact that pays Song less than $5MM annually figures to be quite affordable for San Diego; Jose Iglesias earned $3MM last year after being added to San Diego’s roster on a minor league deal to fill out the club’s bench mix. Song figures to fill a similar role this year to the one Iglesias held last season, chipping in around the infield and serving as a pinch-hitter.

While Song has primarily played third base throughout his career in the KBO league, that position is manned by Manny Machado in San Diego. Perhaps the Padres will look to get Machado occasional DH reps headed into his age-33 campaign, but aside from those occasional fill-in days Song figures to spend most of his time at first and second base, both of which are positions he logged significant time at in South Korea. Jake Cronenworth is currently slated to serve as San Diego’s second baseman next year, though his name has popped up in trade talks this winter. First base meanwhile, is unsettled after the departure of Luis Arraez. Gavin Sheets has some experience at the position but may be better suited for DH duties. As a result, first base could be Song’s best shot at regular reps, though it’s possible a trade of Cronenworth or the addition of a more traditional first base option like Paul Goldschmidt or Rhys Hoskins changes things.

The signing of Song comes just one day after the club agreed to reunite with right-hander Michael King on a three-year, opt-out laden contract. According to RosterResource, the Padres project for a payroll just under $217MM in 2026, with a payroll of nearly $258MM for luxury tax purposes. That’s before the addition of Song to the payroll, which at the currently reported numbers would push the team’s payroll up to around $221MM and around $262MM for luxury tax purposes. That would put them just barely below the second, $264MM luxury tax threshold for 2026.

If the Padres don’t want to go over that line, they would need to subtract salary from the roster to make virtually any more additions to the roster. That’s far from impossible, as rumors have percolated around not only Cronenworth but also players like right-hander Nick Pivetta and Ramon Laureano. A trade of Pivetta would save $20.5MM in 2026 and $13.75MM for luxury tax purposes. Cronenworth being dealt would save roughly $12.3MM in 2026 and $11.5MM for luxury tax purposes. Laureano wouldn’t save nearly as much money, as he’s due just $6.5MM next season on the final year of his contract.

Of course, it’s also possible the Padres simply stand pat from here, though doing so without adding another bat to the first base/DH mix would certainly be risky. Perhaps an addition on the trade market that comes with a lower financial cost could make some sense if San Diego neither wants to exceed the second luxury tax threshold nor trade salary to make room in the budget. Players like Triston Casas of the Red Sox and Mark Vientos of the Mets could potentially be available this winter and remain under affordable team control.