7-Day IL
Injury Oblique
Est. Return 6/24/2025
2025 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
0
SV
0
Rest-of-Season Projections
2025 Fantasy Outlook
Ogasawara was posted in December and will look to make the jump to MLB ahead of his age-27 season. The fact that the lefty still has several years of his prime ahead of him will be appealing to potential suitors, but it's not clear that Ogasawara has enough in his profile to merit much interest. His 3.12 ERA last season was above league-average for NPB (2.96), while his 13.6 K% was well below average (18.8%) - not the sort of performance which says a player is ready to jump to a new level. For his career, Ogasawara's 3.67 ERA is higher even than the likes of Shun Yamaguchi (3.36) and Kohei Arihara (3.37), two pitchers who failed to make an impact in their brief MLB careers, to say nothing of long-term success stories like Masahiro Tanaka (2.67) and Kenta Maeda (2.39). A 5-foot-11 frame and a fastball that sits a modest 91-93 mph are further points against the lefty, though an elite 3.7 BB% does at least provide one reason for MLB teams to think he's a project worth investing in. Read Past Outlooks

On rehab assignment
Ogasawara (oblique) has been transferred to High-A Wilmington to continue his rehab assignment.
ANALYSIS
Ogasawara tossed two scoreless frames with two strikeouts with the rookie-level Florida Complex League on Saturday in his first rehab start. The left-hander has been on the 7-day injured list at Triple-A Rochester since mid-April due to an oblique strain. Ogasawara should be activated by Rochester soon if all goes well, but there's no indication he's under consideration for a spot on the major-league roster anytime soon. The 27-year-old held a 4.80 ERA and 12:4 K:BB over 15 innings in three starts for Rochester before getting hurt.
Ogasawara tossed two scoreless frames with two strikeouts with the rookie-level Florida Complex League on Saturday in his first rehab start. The left-hander has been on the 7-day injured list at Triple-A Rochester since mid-April due to an oblique strain. Ogasawara should be activated by Rochester soon if all goes well, but there's no indication he's under consideration for a spot on the major-league roster anytime soon. The 27-year-old held a 4.80 ERA and 12:4 K:BB over 15 innings in three starts for Rochester before getting hurt.
Pitching Stats
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Minor League Game Log

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Minor League Left/Right Pitching Splits (AAA)
Since 2023
-11%
BAA vs LHP
2025
-11%
BAA vs LHP
BAA | K | BB | H | HR | |
---|---|---|---|---|---|
Since 2023vs Left | .250 | 1 | 2 | 5 | 0 |
Since 2023vs Right | .282 | 11 | 2 | 11 | 1 |
2025vs Left | .250 | 1 | 2 | 5 | 0 |
2025vs Right | .282 | 11 | 2 | 11 | 1 |
2024vs Left | 0 | 0 | 0 | 0 | 0 |
2024vs Right | 0 | 0 | 0 | 0 | 0 |
2023vs Left | 0 | 0 | 0 | 0 | 0 |
2023vs Right | 0 | 0 | 0 | 0 | 0 |
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Defensive Stats
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Placed on Triple-A IL
Triple-A Rochester placed Ogasawara on its 7-day injured list Thursday with an oblique injury, Spencer Nusbaum of The Washington Post reports.
ANALYSIS
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Sent to Rochester
The Nationals optioned Ogasawara to Triple-A Rochester on Friday.
ANALYSIS
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Knocked around in spring start
Ogasawara took the loss after allowing five runs on seven hits and three walks while striking out two over 3.2 innings Monday during a Cactus League loss to the Marlins.
ANALYSIS
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Tosses bullpen Friday
Ogasawara threw 40 pitches in a bullpen session Friday, Jessica Camerato of MLB.com reports.
ANALYSIS
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Two-year contract with Washington
The Nationals signed Ogasawara to a two-year, $3.5 million contract Friday, Andrew Golden of The Washington Post reports.
ANALYSIS
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Latest Fantasy Rumors

Hoping to be posted this offseason
Ogasawara has requested that his Nippon Professional Baseball team, the Chunichi Dragons, make him available to MLB teams this offseason via the posting system, Yahoo Sports Japan reports.
ANALYSIS
Ogasawara, who turns 28 Tuesday, has pitched for the Dragons for nine seasons, most recently collecting a 3.12 ERA but just 82 strikeouts over 144.1 innings during the 2024 campaign. Jon Morosi of MLB Network reported back in April that MLB teams were scouting Ogasawara, although it's unclear what level of interest he will garner.
Ogasawara, who turns 28 Tuesday, has pitched for the Dragons for nine seasons, most recently collecting a 3.12 ERA but just 82 strikeouts over 144.1 innings during the 2024 campaign. Jon Morosi of MLB Network reported back in April that MLB teams were scouting Ogasawara, although it's unclear what level of interest he will garner.