MLBTR Podcast: Brent Rooker’s Extension, Gavin Lux, And Catching Up On The Holiday Transactions
The latest episode of the MLB Trade Rumors Podcast is now live on Spotify, Apple Podcasts, and wherever you get your podcasts! Make sure you subscribe as well! You can also use the player at this link to listen, if you don’t use Spotify or Apple for podcasts.
This week, host Darragh McDonald is joined by Tim Dierkes of MLB Trade Rumors to discuss…
- The Athletics and Brent Rooker agreeing to a five-year extension (1:40)
- The Dodgers signing Hyeseong Kim and trading Gavin Lux to the Reds (6:40)
- The Diamondbacks signing Corbin Burnes (14:45)
- Do the Blue Jays have unique challenges in signing free agents to come to another country? (16:30)
- Will Burnes opt out in two years and will the Diamondbacks trade a starter now? (21:05)
- The Yankees acquiring Cody Bellinger from the Cubs and signing Paul Goldschmidt (26:35)
- The Astros signing Christian Walker (34:40)
- The Mets signing Sean Manaea and Griffin Canning (39:15)
- The Red Sox signing Walker Buehler and Patrick Sandoval (43:35)
- The Phillies acquiring Jesús Luzardo and signing Max Kepler (50:35)
- The Orioles signing Charlie Morton (55:35)
- The Guardians trading Josh Naylor to the Diamondbacks and signing Carlos Santana (58:30)
- The Rangers trading Nathaniel Lowe to the Nationals and signing Joc Pederson (1:01:25)
- The Nationals get Lowe as well as signing Josh Bell, Michael Soroka and Trevor Williams (1:05:30)
- The Tigers signing Gleyber Torres and shuffling their infield around (1:08:25)
Check out our past episodes!
- Kyle Tucker To The Cubs, And Trades For Devin Williams And Jeffrey Springs – listen here
- Winter Meetings Recap – listen here
- Blake Snell, Dodger Fatigue, And The Simmering Hot Stove – listen here
The podcast intro and outro song “So Long” is provided courtesy of the band Showoff. Check out their Facebook page here!
Dodgers Sign Hyeseong Kim
With hours left to go before his posting window closes, Hyeseong Kim and the Dodgers signed a three-year contract worth $12.5MM. The deal includes a two-year club option (which would need to be exercised together) covering the 2028-29 seasons. If the Dodgers exercise the option, they’d pay an additional $9.5MM over those two years. Los Angeles designated catcher Diego Cartaya for assignment to open a 40-man roster spot. Kim is represented by CAA Sports.
Kim’s former team, the Kiwoom Heroes, officially posted him on December 5, giving him until 4:00 PM CT this afternoon to sign with an MLB club. As the days ticked by and the rumor mill remained relatively quiet, it seemed like a legitimate possibility that Kim would return for one more season with the Heroes. Instead, the Dodgers, who hadn’t been closely linked to Kim this winter, swooped in and made a winning offer in the nick of time. In addition to Kim’s salary, the Dodgers will have to pay a $2.5MM release fee to the Heroes (20% of the guaranteed $12.5MM on his deal). Their total investment is $15MM.
Kim, soon to be 26, is a four-time consecutive winner of the KBO Golden Glove Award, given annually to the best overall player at each position. He won the award at shortstop in 2021 before moving to second base and winning each year from 2022-24. In addition to playing a strong second base and at least a capable shortstop, Kim is also an asset on the basepaths. He led the KBO in stolen bases in 2021 and has swiped at least 20 bags in all seven full seasons of his career. His glove and legs should give him a relatively high floor as a utility player in MLB, if nothing more.
The big question is how Kim’s bat will hold up against MLB pitching. While he struggled at the plate early in his career, the lefty batter blossomed into a well-above-average hitter during his last three years in the KBO. From 2022-24, he produced a .326 batting average and a .384 OBP, while his wRC+ was never below 118 in any season. However, Kim has never hit for much power, even by the slightly lower power standards of the KBO. His 2024 season was the best of his career power-wise – he reached double-digit home runs for the first time – but his .132 isolated power was still below league average. Thus, it’s fair to worry that Kim might not have the necessary power to be an everyday player in MLB. Just look at his former KBO teammate Ha-Seong Kim. Ha-Seong Kim was a genuine power threat in the KBO, socking 30 homers in 138 games during his final season in Korea. Since coming to MLB, he has become known as a soft-hitting contact specialist. His career .137 ISO in MLB is 15% worse than the league average over the last four years.
When MLBTR ranked Hyseong Kim at no. 26 on our Top 50 Free Agents list, we predicted he’d sign a three-year, $24MM contract. His actual deal guarantees him a little more than half of that predicted salary. That said, it’s worth mentioning that Kim reportedly turned down more money from at least one other team. A representative from Kim’s agency, CAA Baseball, told a Korean media outlet (passed along by Jeeho Yoo of Yonhap News) that the Angels offered him a five-year, $28MM deal, while the Mariners, Cubs, and Padres also made offers with undisclosed terms. Jeff Fletcher of the Orange County Register contradicts that report. According to Fletcher, the Angels made an offer to Kim but did not top what he received from the Dodgers.
To that point, Kim might not have a guaranteed starting role in L.A. The Dodgers already have Gavin Lux to play second base, Mookie Betts at shortstop, and Max Muncy holding down the hot corner. Furthermore, they have the talented defensive shortstop Miguel Rojas and the versatile Chris Taylor on the bench. Center fielder Tommy Edman can also play all around the infield.
According to Fabian Ardaya of The Athletic, Kim will play a “super-utility role” in 2025. The use of the prefix “super” seems to imply that he’ll be playing several positions. While he has significant experience at both shortstop and second base, he has only played a handful of games at third base in his professional career. He also played 44 games in left field during the 2020 season, and it will be interesting to see if the Dodgers consider using him in the outfield at all. As a “super-utility” player, Kim will presumably have a bigger role than that of a typical bench bat, but with so much competition on the Dodgers’ talent-filled roster, he’ll have to earn his playing time.
The fact that the Dodgers signed Kim despite already having so many infielders is evidence of how much this team values depth and flexibility. It’s also a sign of how much they value what Kim can bring to the table. Funnily enough, manager Dave Roberts has already made his team’s affinity for Kim quite clear. After the Dodgers played an exhibition match against the Korean national team last March, Roberts told reporters (including Yoo), “Our scouts like the second baseman: just the way his body moves.” That second baseman, of course, was Kim.
Various reports out of South Korea were first with the news that Kim was signing with Los Angeles on a three-year deal with a two-year club option. Jon Heyman of the New York Post was first to report the $12.5MM guarantee and the $22MM maximum value.
Dodgers Still Planning To Use Betts-Lux Middle Infield
The Dodgers added to their middle infield with the signing of KBO second Hyeseong Kim to a three-year contract. That fueled speculation about Los Angeles dealing one of their other infielders.
General manager Brandon Gomes downplayed the notion that adding Kim will spur another trade. “I think it’s more that we’re adding a really talented player, and [then we’ll] see where things play out,” Gomes told reporters (including Jack Harris of the Los Angeles Times). “It’s helpful to have really strong pieces at a lot of different areas. So that’s how we’re viewing it right now.” He added that the team’s “mindset” remains a middle infield pairing of Mookie Betts at shortstop and Gavin Lux at second base.
Before Gomes’ media session, Fabian Ardaya of the Athletic reported that the Dodgers view Kim as a utility player. Los Angeles values defensive flexibility as much as any team. The 25-year-old Kim has primarily been a second baseman but has experience in left field and at both positions on the left side of the infield. L.A. already has Miguel Rojas and Chris Taylor as veteran utility options. Tommy Edman can also play either middle infield spot but is expected to be the everyday center fielder between Michael Conforto and Teoscar Hernández. Assuming a four-man bench, Kim and backup catcher Austin Barnes would round out the position player group. That’d push outfielders Andy Pages and James Outman, each of whom has a minor league option left, to Triple-A if everyone’s healthy.
Rojas underwent postseason hernia surgery, but there’s no indication that’ll keep him from participating in Spring Training. Taylor is coming off a .202/.298/.300 showing. The organization clearly places a lot of emphasis on his versatility and clubhouse presence. L.A. designated former top prospect Diego Cartaya for assignment as the corresponding move for Kim. That suggests the Dodgers see a path to carrying all of Kim, Rojas and Taylor on the roster.
There could be an element of gamesmanship to Gomes’ comments. It wouldn’t do the team much good to proclaim they’re trying to deal a middle infielder even if they were. That said, it’s not surprising that the Dodgers don’t feel Lux’s situation changes much after the Kim signing. The latter’s three-year, $12.5MM guarantee is a modest investment that suggests MLB teams generally viewed him as a utility player rather than a regular.
Lux hit .251/.320/.383 with 10 homers while playing slightly below-average defense in more than 1000 innings at second base last year. He had a fantastic second half, hitting .304 with seven homers in 61 games after the All-Star Break. He has been a league average hitter over nearly 1500 MLB plate appearances. Evaluators question how much Kim will bring to the table offensively. It’d be risky for the Dodgers to deal Lux and expect Kim to handle the keystone.
The Dodgers also don’t have glaring weaknesses that they need to address via trade. There’s little reason to deal Lux for prospects. The Dodgers could open the season with a rotation including Shohei Ohtani, Blake Snell, Tyler Glasnow and Yoshinobu Yamamoto. They’re expected to bring Clayton Kershaw back. They might sign Roki Sasaki. Tony Gonsolin and Dustin May are returning from injury. The bullpen is the relative weak point, but Ardaya writes in a separate column at The Athletic that the team prefers to address that through free agency rather than trade.
KBO’s Kiwoom Heroes Post Hyeseong Kim
10:41pm: The Heroes announced that the posting window will open at 8:00 am Eastern on Thursday. MLB is evidently waiting until tomorrow to formally notify teams about his availability. Kim will have until 5:00 pm Eastern on January 3 to sign (X link via Yoo).
9:17pm: The KBO announced that the Heroes have officially made Kim available via the posting system. The posting went into effect at noon on Wednesday in South Korean time, not at 12:00 pm Eastern as previously reported. According to Jeeho Yoo of Yonhap News (X link), the 30-day signing period will officially begin at 8:00 a.m. Eastern the morning after MLB informs teams of Kim’s posting.
2:30pm: Infielder Hyeseong Kim is expected to be officially posted by the Kiwoom Heroes of the Korea Baseball Organization on Wednesday at noon Eastern/11am Central, per Jon Morosi of MLB Network (X link). Once it’s official, that will start a 30-day window where all MLB clubs can negotiate with Kim and his representatives. If no deal is signed in that time, he will return to the Heroes for the 2025 season. (The NPB posting window has been expanded from 30 days to 45 days but KBO players still have a 30-day time frame.)
Kim, 26 in January, said himself last week that he believed the formal posting process was about a week away. It appears that timeline is holding, so Kim will be officially be available to MLB clubs as of tomorrow. Kim will be considered a “professional” under MLB rules because he is at least 25 years old and has at least six years of experience in a foreign league. As such, he can sign a deal of any length or dollar amount, depending on what MLB clubs are willing to offer. That’s in contrast to someone like Roki Sasaki, who is only 23 years old and will therefore be capped by the international bonus system.
It isn’t likely that Kim will secure a massive deal, but he could still have some interest. He is expected to provide a somewhat similar skillset to his former double play partner Ha-Seong Kim, no relation, as both players are considered sure-handed defenders at multiple spots on the diamond. Hyeseong has mostly played the two middle infield spots, but also with brief stints at third base and in the outfield corners.
Offensively, Hyeseong is a tick below Ha-Seong, however. Hyeseong has slashed .304/.364/.403 in his eight KBO seasons whereas Ha-Seong hit .294/.373/.493 in his seven campaigns in Korea. The batting average and on-base numbers are fairly close but Ha-Seong clearly has the edge in terms of slugging. Hyeseong got to 11 home runs in 2024, a career high for him, whereas Ha-Seong had 19 or more homers in his final six KBO seasons, including 30 in the final year.
Still, even if Hyeseong is a tick below Ha-Seong in the power department, his youth and athleticism should work in his favor. As mentioned, he is considered a strong defender and could be placed at multiple different positions. He has stolen between 20 and 46 bases in each of the past six seasons.
MLBTR predicted he could secure a three-year deal with a $24MM guarantee as part of the annual Top 50 Free Agents post. However, predicting the interest in a player making the move from overseas can be difficult, as players like Jung Hoo Lee and Masataka Yoshida both proved to have much more earning power than was assumed by forecasters.
The Mariners are reportedly interested in Kim but it stands to reason that plenty of others would be in the mix as well, given his versatility. Clubs like the Giants, White Sox, Marlins, Brewers and others are speculative fits. Players like Willy Adames, Ha-Seong Kim, Gleyber Torres and others are also available in the middle infield free agent market. They will be joined by Hyeseong but the 30-day posting window means there will be clarity on his status by the first few days of 2025, at the latest.
In addition to the money going to Kim, a signing club will also have to pay a posting fee to the Heroes, the value of which will depend upon the size of the contract. The fee will be calculated as 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.
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.
Mariners Prioritizing Infield Bats
The Mariners are once again looking to upgrade their offense this winter after 2024’s underwhelming results at the plate squandered a terrific season from their pitching staff. Unsurprisingly, general manager Justin Hollander tells Jon Morosi of MLB.com that the M’s view second base as a priority this offseason. Ken Rosenthal of The Athletic adds that the M’s would also like to add at first base. Ideally, Seattle would add one bat to help out at second or third base — with Josh Rojas and Dylan Moore a potential platoon at the other spot — and another at first base. Hollander downplayed the idea of adding to the outfield, telling FanSided’s Robert Murray that between Randy Arozarena in left, Julio Rodriguez in center, Victor Robles in right and Luke Raley as a corner outfield/first base/DH option, the Mariners feel they have potential for a “pretty high-end outfield.”
With the offseason just days old, there are of course virtually limitless options to explore via free agency and trade. Morosi reports that Seattle is among the teams to have evaluated Hyeseong Kim, the star second baseman of the Korea Baseball Organization’s Kiwoom Heroes. Kim, 25, is scheduled to be posted for MLB clubs to bid on this winter. Rosenthal lists a reunion with Justin Turner as something Seattle could pursue. He cautions against the likelihood of the Mariners spending to the levels necessary to add longtime division rival Alex Bregman or (to a lesser extent) first baseman Christian Walker.
Kim, 26 in January, hit .326/.383/.458 with 11 home runs, 30 steals, an 8.3% walk rate and just a 10.9% strikeout rate for the Heroes this past season. He’s been a plus hitter three straight seasons in the KBO but is more of a contact-, speed- and defense-oriented player, as he’s not considered to have much home run pop. This past season’s 11 round-trippers were a career-high. Turner, of course, finished out the 2024 season in Seattle after coming over from the Blue Jays in a trade. He batted .264/.363/.403 in 190 plate appearances as a Mariner. His overall .259/.354/.383 slash is a ways from peak levels, and Turner will turn 40 later this month. That said, he was still a productive big league hitter this past season.
The Mariners’ expected focus on infield bats — and their flexibility to look at multiple positions — was laid out in our Mariners Offseason Outlook. As noted in that piece a few weeks back, Kim and Gleyber Torres are two particularly interesting options at second base, and both are likely to be relatively affordable. Former Padres shortstop Ha-Seong Kim could technically be a fit at second or third base, but he’s likely to miss the beginning of the season following his recent shoulder surgery and derives a good bit of his value from his plus glovework. He’d be a less-than-ideal fit if the goal is to bolster the offense from day one.
Meanwhile, signing Bregman or Willy Adames (perhaps with eye toward moving him to third base) would represent a major philosophical departure from the Mariners’ past mode of operation. The M’s have only given out one multi-year deal to a free agent position player under president of baseball operations Jerry Dipoto — that being last winter’s two-year, $24MM pact to Mitch Garver. Rosenthal suggests that signing a $100MM+ deal could be outside the team’s budget, but even beyond that, it’s simply not how Dipoto has historically operated.
The trade market could present various alternatives. The Rays will likely listen to offers on Yandy Diaz, making him one speculative fit at first base. He’d align well with Seattle’s desire to reduce their MLB-worst strikeout rate and is slated to earn $10MM next year with a $12MM club option for 2026. Rays second baseman Brandon Lowe, owed $10.5MM with an $11.5MM club option for 2026, is another on-paper fit. He wouldn’t reduce the team’s strikeout rate, but he’s a potential impact bat with multiple years of club control. Cleveland could listen to offers on slugging first baseman Josh Naylor.
However things play out, the M’s will be looking to once again redraw an offense that has struggled to make contact at one of the most glaring rates in the league. In addition to tying the Rockies with an MLB-high 26.8% strikeout rate, Mariners hitters had the league’s third-lowest overall contact rate (74%) and were tied for MLB’s second-worst contact rate on swings at pitches within the strike zone (82.9%). The Seattle lineup actually chased pitches off the plate at the fourth-lowest rate in MLB … but their contact rate on those swings was still the third-worst.