Ogasawara, 27, has posted a 3.28 ERA in 596 innings of work over the past four seasons with Nippon Professional Baseball’s Chunichi Dragons. While that’s a solid performance, the lefty’s lackluster 13.6% strikeout rate last year raised plenty of eyebrows when he was posted by the Dragons last month. That skepticism about his ability to make such a profile with such few strikeouts work in the majors led Ogasawara to sign a modest deal that guarantees him just $3.5MM, well below the going rate for even back-end starters in free agency. Rizzo expressed confidence in Ogasawara as a starting-caliber option despite those concerns, but stopped short of fully guaranteeing him a rotation spot or even an active roster spot to open the season in his discussion of the club’s rotation plans.

“We signed [Ogasawara] to be a starting pitcher for us in the big leagues,” Rizzo told reporters, including Zuckerman. “Of course, he’ll have to earn that spot in the rotation. I think there’s going to be great competition for the five spots in the rotation by some good, young, talented players. If he’s not ready for the big leagues, then we could always option him to Triple-A and bring him up sometime during the season. But we anticipate him battling out for a rotation spot, and I think it’s going to be a fun competition to watch.”

That most tracks with Andrew Golden of the Washington Post’s reporting on the state of the club’s rotation. Golden characterizes right-hander Michael Soroka, left-hander MacKenzie Gore, and right-hander Jake Irvin as the three players locked into Opening Day rotation spots if healthy. That leaves two spots in the rotation for Ogasawara, veteran right-hander Trevor Williams, and young southpaws Mitchell Parker and DJ Herz to compete for, though it’s worth noting that Williams himself indicated earlier this month that he’ll be part of the club’s Opening Day rotation. That would leave just one spot for Ogasawara, Parker, and Herz to compete for. Ogasawara seems likely to be the favorite for that role headed into Spring Training, though all three have options remaining and Golden suggested that he or even Williams could be pushed to a bullpen role if Parker and/or Herz look particularly good coming out of camp.

The club’s approach of adding plenty of depth to the rotation to ease their reliance on up-and-coming youngsters without blocking them meshes will with the club’s overall philosophy for this winter. As Nausbaum notes, Rizzo told reporters that given “where [the club is] at right now,” the club was cautious about signing free agents with a qualifying offer attached due to the associated loss of draft capital and international bonus pool money. The club’s reluctance to target qualified free agents led the club to bring in a number of short-term reinforcements this winter.

That includes not only their trio of rotation additions but also Nathaniel Lowe, Josh Bell, Amed Rosario, and Jorge Lopez. All of those veterans come with either one or two seasons of control, preventing them from blocking the young players and prospects that the Nationals have been building around since they first began what has become a lengthy rebuild back in 2021. The club’s fortunes appear to be on the upswing headed into 2025 with that group of intriguing youngsters in the rotation and an outfield that currently projects to feature full seasons from James Wood and Dylan Crews in the corners. Cade Cavalli, Robert Hassell III, and Brady House are among the other noteworthy prospects in the club’s pipeline who have yet to establish themselves in the majors but could arrive at some point this season.

That reluctance to block top prospects and young players seems to have played a significant role in how the club’s offseason has played out to this point. Early in the winter, the Nationals were among the teams most frequently connected to Christian Walker before he ultimately signed with the Astros. Walker, of course, received a Qualifying Offer from the Diamondbacks that may have limited the Nationals’ interest in him and led to them pivoting towards the additions of Lowe and Bell. It’s also possible that the club’s desire to avoid blocking young players contributing to them not signing second baseman Gleyber Torres. Torres made clear shortly after he signed with the Tigers that the Nats were among the teams pursuing him but that they had wanted him to move to third base in order to accommodate 24-year-old Luis Garcia Jr. after he enjoyed something of a breakout season in 2024. When Torres landed elsewhere, the Nationals opted to sign Rosario, who has moved around to a number of positions all throughout his career and should have no trouble playing out of position if needed.

Ogasawara, 27, pitched in part of nine seasons for Dragons. He threw 951 1/3 innings, allowing 3.62 earned runs per nine. He struck out 18.9% of batters faced while giving out walks at a 7.7% clip.

Despite fairly decent run prevention, there are also some concerning elements in Ogasawara’s profile. His strikeout rate in Japan is a bit below what is expected of hurlers in North America these days, as the league average has been in the 22-23% range in recent seasons. He’s also a bit undersized, listed at 5’11” and 183 pounds. That size isn’t necessarily a disqualification, as it actually makes him larger than Shota Imanaga, who is 5’10” and 175. Imanaga proved himself capable of handling MLB hitters in 2024 but he also had a 25% strikeout rate in his NPB career before crossing, notably higher than Ogasawara.

It’s also a metric that has wavered for Ogasawara. He got his rate of punchouts as high as 24% in 2022, but then it dropped to 20.1% the year after and then fell way down to 13.6% in the most recent season. That big drop in strikeouts did coincide with a tiny walk rate of 3.7% and he still managed to post a 3.12 ERA, but it does lead to questions as to how his stuff will play in his new environment. He throws a fastball in the 91-93 mile-per-hour range, as well as featuring a curveball and a changeup.

Despite the question marks, it’s a sensible gamble for the Nats to take. The club has been rebuilding for a while, having recently wrapped up their fifth straight losing season. There was some speculation that they might come into this offseason looking to take a step forward, perhaps making a bold strike or two, but that hasn’t really come to pass.

They did make some moves, but mostly avoided committing themselves to anything beyond 2026. They signed Josh Bell, Michael Soroka, Amed Rosario and Jorge López to one-year deals. They brought back Trevor Williams on a two-year pact. Nathaniel Lowe, who has two seasons of club control remaining, was acquired from the Rangers.

Bringing in Ogasawara on a two-year pact aligns with those other moves. The club has seemingly taken the path of making some decent additions while also waiting to see how young players like Dylan Crews, James Wood and Brady House develop. Once they get more clarity on those players and others, they can decide about more assertive moves in the future.

The same is largely true of their rotation. Young and controllable pitchers like MacKenzie Gore, Jake Irvin, Mitchell Parker, DJ Herz and Cade Cavalli have shown some progress to varying degrees but there are still some question marks there. Irvin and Parker have posted decent run prevention numbers but with subpar strikeout rates. Herz had a nice MLB debut in 2024 but had massive walk problems in the minors. Cavalli missed the past two seasons due to Tommy John surgery.

The Nats would probably like a bit more time to continue evaluating those guys to see who among them can emerge as real rotation building blocks. They could have rolled into the season with a rotation of Gore, Irvin, Parker, Herz and Cavalli but clearly wanted to add some more options and improve the overall depth. As mentioned, they signed Soroka and Williams, with Ogasawara now added into the mix as well.

Those three and Gore should have four rotation spots accounted for, at least to start the season. Both Soroka and Williams have some relief experience and could get pushed to the bullpen if they struggle or one of the younger guys pushes them out. Each of Irvin, Parker, Herz and Cavalli have options and could get pushed to Triple-A. The Nats could perhaps consider a six-man rotation, though doing so would limit them to a seven-man bullpen. Josiah Gray could get back in the mix late in 2025 but is currently rehabbing from a Tommy John and internal brace surgery which was performed in July.

Perhaps the bolstered roster will push the Nats into a greater chance of contention, but they are also looking up at three really strong teams in the division. Atlanta and Philadelphia have been powerhouses for years while the Mets just made the playoffs and have been very aggressive, including adding Juan Soto. If the Nats find themselves outside the playoff mix come July, any of the players they’ve added could become trade candidates, on account of their short windows of club control.

The Dragons posted Ogasawara on December 10, which led to a 45-day posting window that ended today. If he had not signed, he would have returned to the Dragons but he’ll be coming to Washington instead. Unlike Roki Sasaki, Ogasawara is not subject to the international bonus pool system. That’s because he is over 25 years old and has at least six professional seasons on his track record. MLBTR predicted him for a two-year, $12MM deal at the start of the offseason.

The Nats owe the Dragons a posting fee, with the size of that fee dependent on the size of the contract. That fee will be equal to 20% of the contract’s first $25MM, 17.5% of the next $25MM and 15% of any dollars thereafter. Since Ogasawara signed for less than $25MM, it’s simply 20% of the guarantee.

La Sorsa, 27 in April, has been a fringe member of the Washington roster for a while. He was claimed off waivers from the Rays in June of 2023 but was outrighted off the roster in December of that year. He got his roster spot back in August of 2024 but has now been bumped off again.

Between the Rays and the Nats, he has 50 1/3 innings in the big leagues with a 4.47 ERA, 19.2% strikeout rate and 6.4% walk rate. He had a strong showing in the minors in 2022, throwing 73 1/3 innings with a 2.33 ERA, 31.4% strikeout rate and 3.6% walk rate. However, he’s been a bit less impressive over the past two seasons, having thrown 92 2/3 innings with a 2.82 ERA, 18% strikeout rate and 6.2% walk rate. A .268 batting average on balls in play and 82.3% strand rate helped him out in that time, which is why his 4.62 FIP was almost two runs higher than his ERA.

He’ll now head to DFA limbo for a week at most. The Nats could explore trades for the next five days but would have to put him on waivers after that, since the waiver process takes 48 hours. If he were to pass through unclaimed, he would have the right to elect free agency on account of his previous outright.

The Associated Press reported the terms of Ogasawara’s deal.

It was reported back in October that the Dragons would make Ogasawara available via the posting system and that has now been rubber-stamped. The 30 MLB clubs can now officially speak to his representatives and see what sort of contract will be necessary to get him to put pen to paper.

While Ogasawara should generate interest, he’s clearly not exciting as Roki Sasaki, who has also been posted for clubs this offseason. However, Ogasawara likely has more earning power than Sasaki due to the binary nature of MLB international signing rules.

Players need to be 25 years old and have six seasons of experience in a foreign professional league in order to be considered “professionals” and have the right to freely negotiate a contract of any size and length. Players who don’t meet those criteria are considered “amateurs” and are therefore subject to the international bonus pool system, where each club gets $5-8MM annually to spend on such players. Sasaki is only 23 years old and will therefore be limited to a minor league deal with a signing bonus of a few million bucks. Ogasawara, on the other hand, is 27 years old and has appeared in parts of 9 NPB seasons. That means he has the freedom to fully assess his earning power and market himself to the highest bidder.

How much interest North American clubs will have in him is unknown. Ogasawara has had some success, but not as much as some other pitchers that have recently come over like Yoshinobu Yamamoto or Shota Imanaga. He has thrown 951 1/3 innings over his NPB career,  though striking out just 18.9% of batters faced. For context, MLB average is usually in the 22-23% range these days. He did get his strikeout rate up to 24% in 2022 but it dropped to 20.1% last year and then all the way to 13.6% in 2024.

The lack of punchouts hasn’t stopped him from succeeding in Japan, as he has a 3.62 earned run average over his career and had a 3.12 ERA in the season that just finished, though MLB clubs might wonder if the same pitch-to-contact approach could carry over to North American ball.

Ogasawara is also on the smaller side for a starting pitcher, listed at 5’11” and 183 pounds. That’s actually slightly larger than the 5’10” and 175 pounds listed for Imanaga, so it’s not a total disqualification, but Imanaga managed to strike out 25% of batters faced in his NPB career.

Though even if Ogasawara is a notch below Imanaga, he could still generate interest. Youth is clearly an attractive quality which is why guys like Yamamoto, Jung Hoo Lee and Juan Soto have been paid so well, so the fact that Ogasawara just turned 27 in October will work in his favor. The recent downturn in strikeouts is a bit concerning but he also lowered his walk rate to a tiny 3.7% rate in 2024 and the ERA was still good.

It’s difficult to forecast a contract for a player coming from another league like Ogasawara but MLBTR predicted after the start of the offseason that he could land a two-year, $12MM deal. Perhaps he could benefit from the fact that the market for mid-rotation starters has been quite strong so far this winter. Each of Luis Severino, Yusei Kikuchi, Frankie Montas, Matthew Boyd and Clay Holmes have earned larger guaranteed than projected in recent weeks, which could perhaps trickle down to Ogasawara.

The lefty and his team will have more than a month to feel out the market and gauge interest. For clubs still looking to add in the rotation but who don’t want to pay for top names like Corbin Burnes, Max Fried or Jack Flaherty, Ogasawara will be part of a mid-rotation or back-end group that still includes Sean Manaea, Nathan Eovaldi, Jeff Hoffman, Nick Pivetta, Andrew Heaney, Jose Quintana, Max Scherzer, Justin Verlander and others.

Ogasawara just turned 27 years old earlier this month. He’s already a veteran of parts of nine NPB seasons, having made his Central League debut as an 18-year-old back in 2016. Listed at 5’11” and 183 pounds, he’s of slighter frame than the typical big league starter but has started at least 23 games and topped 140 innings in each of the past four seasons. That includes a career-high 160 2/3 innings with the Dragons in 2023.

This past season, Ogasawara tossed 144 1/3 innings and notched a solid 3.12 ERA with an outstanding 3.7% walk rate — the best mark of his career. Unfortunately, that pinpoint command came with a career-worst 13.6% strikeout rate that will limit Ogasawara’s appeal. To his credit, Ogasawara has missed far more bats in the past, punching out 24% of opponents as recently as 2022 and fanning 20.1% of opponents in 2023. In both instances, he had higher but nevertheless strong walk rates (6.7% and 6.1%, respectively).

Video of Ogasawara reveals a pitcher who sits in the 91-93 mph range with his four-seamer, complementing the pitch with a low-80s changeup and a slow knuckle curve that sits in the low 70s. Neither Ogasawara’s frame nor velocity stand out, but both are relatively comparable to those of 5’10”, 175-pound Cubs lefty Shota Imanaga. Ogasawara’s camp may try to make that comparison, but Imanaga consistently posted lower earned run averages and far superior strikeout rates in NPB (29.5% in his final season with the BayStars). That said, Ogasawara is three years younger than Imanaga was at the time of posting. A multi-year deal seems plausible, though likely not at the same levels as Imanaga’s $53MM guarantee (which can grow to $79MM based on club/player options).

For those in need of a reminder or an introduction to the NPB/MLB posting system, NPB clubs are allowed to “post” players for MLB teams to bid on prior to those players reaching free agency for the first time (nine years of service, under NPB rules). Any major league team can negotiate with the player and his representatives to negotiate a contract for any amount — provided the player is at least 25 years old and has at least six seasons of professional experience. (Players under 25 and/or with fewer than six years of experience are deemed “amateurs” by MLB and restricted to minor league deals and hard-capped signing bonuses.)

The posting window lasts 45 days but can reach a conclusion earlier, depending on when the player in question strikes a deal to his liking. In addition to paying the player the agreed-upon guarantees in the contract, the MLB team will also be on the hook for a release fee to the player’s former team. That fee is equal to 20% of the contract’s first $25MM, 17.5% of the next $25MM and 15% of any dollars thereafter. Contractual factors like club options, incentives based on innings/plate appearances, awards bonuses, etc. are all subject to being included in the release fee as well, once those earnings are unlocked.

The southpaw celebrates his 27th birthday on Tuesday, and he has appeared with the Dragons in each of the last nine Nippon Professional Baseball seasons.  However, since he is short of nine full years of NPB service time, Ogasawara will need to be posted in order to make the move to North American baseball.

To recap the posting system, any team that signs Ogasawara will have to pay a separate posting fee to the Dragons that is contingent on the size of the contract — the 20% of the contract’s first $25MM, plus 17.5% of the next $25MM and 15% of any dollars thereafter.  If Ogasawara is posted, Major League teams will have 45 days to reach an agreement with the left-hander.  If no deal is reached within that window of time, Ogasawara will return to the Dragons for the 2025 NPB season.

Ogasawara has a 3.66 ERA over 1095 career innings for the Dragons, and he has tossed at least 141 1/3 innings in each of the last four seasons.  In 2024, he had a 2.99 ERA in 141 1/3 frames, with a very impressive 3.42% walk rate but also only a 13.87% strikeout rate.  While Ogasawara’s control has only been getting better during his NPB career, he has never been a big strikeout pitcher, and this season’s low rate of missed bats will certainly stand out as a potential red flag to big league evaluators.

It remains to be seen how highly Ogasawara will be judged by MLB teams, though he’ll be one of the youngest rotation candidates available in this year’s free agent market.  With scouts already keeping an eye on his work for the Dragons, Ogasawara figures to draw some attention should the Dragons decide to post him.