Who is Sung-mun Song? Padres' new free agent signing comes with big stats, solid contract

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The San Diego Padres have a new infielder.

Sung-mun Song has signed with the Padres on Friday, according to ESPN's Jorge Castillo.

Song, mostly a third baseman, may have to move elsewhere in San Diego. But that's something to worry about once spring gets here.

For now, the big deal is that the Padres landed a quality free agent, and their team will be better for it.

Here's what to know about Song.

Who is Sung-mun Song?

Song is a 29-year old Korean infielder.

He throws right-handed but bats left-handed, and he'll turn 30 in August.

He played for the Kiwoom Heroes in the Korea Baseball Organization. Song signed a six-year extension in August 2025, but he quickly asked to be posted after the season, and now he's coming to MLB.

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Sung-mun Song contract details

The details are still being awaited on Song's contract.

The initial report from insider Francys Romero says the deal is for $13 million over three seasons.

Song Sung-mun is in an agreement with the San Diego Padres for around $13 million over three seasons, pending physical, per sources.

One scout rates his talent between Ha-Seong Kim and Hye-Seong Kim, closer to Ha-Seong Kim but with less power and defensive skills.

— Francys Romero (@francysromeroFR) December 19, 2025

Sung-mun Song stats

Song is a great hitter, and his game has reached another level the last two seasons.

In 2024, Song hit .340 with a .927 OPS that includes 29 doubles, four triples, 19 home runs, 104 RBI and 21 stolen bases.

Then in 2025, he was at .315 with a .917 OPS, 37 doubles, four triples, 26 homers, 90 RBI and 25 steals.

Song has stolen 46-of-48 bases successfully in the last two seasons.

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