Padres roster review: Sung-Mun song – San Diego Union-Tribune
SUNG-MUN SONG
Position(s): Third base, second base
Bats / Throws: Left / Right
2026 opening day age: 29
Height / Weight: 6-foot / 194 pounds
How acquired: Signed as a free agent in December 2025
Contract status: A four-year, $15 million deal will see Song make $2.5 million in 2026, $3 million in 2027, $3.5 million in 2028 and $4 million in 2029 if he does not opt out of last year; Half of his $1 million signing bonus is due in January 2026 and the other half in 2027; There is a $7 million mutual option for 2030.
fWAR in 2025: N/A
Key 2025 stats (KBO): .315 AVG, .387 OBP, .530 SLG, 26 HRs, 90 RBIs, 103 runs, 68 walks, 96 strikeouts, 25 steals (144 games, 646 plate appearances)
STAT TO NOTE
.214 — Song’s isolated power in 2025, a career high as he prepared for a jump to the majors. Isolated power measures a player’s raw power (extra bases per at-bat) and Song had a .190 OPS in 2018, in his third year as a pro in Korea, before it dropped to .101 in 2019 and then a career-low .095 in 2023. Hitting 19 homers pushed Song’s isolated power to .178 in 2024 and then a career-high 26 homers push it even higher in 2025.
TRENDING
Idle — Drafted by the Heroes in 2014, Song debuted in the KBO the following year but didn’t become a regular until 2019. A drop-off in production — he had an .884 OPS in 78 games in 2018 and a .597 OPS in 103 games in 2019 — was followed by losing the 2020 season and a chunk of the 2021 season to military service obligations. Then three straight sub-.700 OPS seasons forced Song to rethink his approach to professional baseball, especially in the face of the likes of Ha-Seong Kim, Jung Hoo Lee and Hyeseong Kim generating big-league buzz. Song started with weight training and nutrition. A hitting coach also helped him with balance, pull-side power and the ability to catch up with the sort of fastballs that seem to dog Korean players when they arrive in the States. It all added up to a breakthrough year in which Song paired 19 homers, 104 RBIs and 21 steals with a .340/.409/.518 batting line. To prove it was no fluke, Song followed up his 2024 season with another strong effort that solidified his wish to try his hand in the majors. The ensuing, four-year, $15 million deal that Song signed with the Padres in December cost his new employer a $3 million posting fee to be paid to the Kiwoom Heroes.
2026 OUTLOOK
Like Kim before him, Song appears to be joining the Padres as a utility player with the hope that he blossoms into more as he gets comfortable in a new country and league. Song had experience in Korea at third base (500 starts), second base (149 starts) and first base (38 starts). Padres president of baseball operations A.J. Preller even mentioned outfield reps in passing as he assessed how Song could help the Padres in 2026.
Former KBO player Sung-Mun Song shakes hands with Padres vice president of amateur and international scouting Pete DeYoung after signing a contract with the San Diego Padres at Petco Park on Saturday. (Photo by Armond Feffer/San Diego Padres)
ROSTER RANKINGS
24. INF Sung-Mun Song
25. RHP Matt Waldron
26. OF Bryce Johnson
27. RHP Ron Marinaccio
28. RHP Bryan Hoeing
29. LHP Kyle Hart
30. RHP Jhony Brito
31. INF Will Wagner
32. OF Tirso Ornelas
33. RHP Garrett Hawkins
34. RHP Miguel Mendez
35. RHP Daison Acosta
36. RHP Ty Adcock
37. RHP Alek Jacob
38. INF Mason McCoy
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