Former Rangers right-hander Kohei Arihara is interested in returning to MLB, per a report from Yahoo Japan (h/t to Yakyu Cosmopolitan). Arihara is set to become a free agent on December 2. He’s been with the SoftBank Hawks of Nippon Professional Baseball for the past three seasons.
Arihara began his career in NPB, spending six seasons with the Hokkaido Nippon-Ham Fighters. His solid work at Japan’s highest level earned him a two-year, $6.2MM deal with the Rangers in December 2020. Arihara pitched in parts of two seasons for Texas from 2021 to 2022. He struggled to a 6.64 ERA across 10 starts with the Rangers in his first season. The results were even worse the following year, when Arihara posted a 9.45 ERA over five appearances. He was designated for assignment in September 2022 and elected free agency at the end of the year.
The righty’s stateside debut was marred by a serious injury early in the season. The team discovered an aneurysm in Arihara’s shoulder, leading to surgery that sidelined him until September. Arihara was crushed for nine earned runs over 12 innings after coming back from the injury.
Arihara excelled in his return to NPB, putting together three productive seasons with the Hawks. He posted a pristine 2.31 ERA in 17 starts with the team in 2023. Arihara nearly matched that mark across a longer sample the following season, recording a 2.36 ERA over 26 starts on his way to 14 wins. He won another 14 games this past season, though his ERA did creep over 3.00.
The 33-year-old Arihara seems to be past the health issues that plagued his previous MLB stint, tossing at least 175 innings in back-to-back seasons. He’s certainly built some momentum toward a possible return to the big leagues. The Yahoo Japan report noted that the Yomiuri Giants are also interested in Arihara’s services.
Photo courtesy of Eric Canha, Imagn Images

Fool me once, shame on you. Fool me twice…
Well don’t fool me twice
“You can’t get fooled again.” – W Bush.
Won’t get fooled again-Pete Townshend
What a fool believes – Doobie Brothers
Yeah I dont see this working out well…
Well , could you tell him I’m considering on showing up for work on Monday. See if he cares?
Magic 8 Ball says, chances are low.
Your magic 8 ball is correct sir!!
I’m not sure what to say. It does look like he found some help when he signed with SoftBank but at the same time, even with a FIP and xFIP around 2.80, NPB is in a dead ball era right now so that will most likely get worse as he moves to the MLB. But, if he does, maybe he can sign cheap with some non-competitive team. Who knows…? Honestly, though, given his age, he should probably stick with the Hawks and keep doing what he’s doing well.
Has Oakland written all over him
Perhaps to be a Bay Area rapper because there’s no baseball team there anymore…
I’m sure the Oakland Ballers would be thrilled to have him!
Two consecutive 14 win seasons with good ERA numbers along with big dollars and high demand here…..duh
If we were to rank pitchers potentially leaving NPB for MLB:
Tatsuya Imai
Foster Griffin
Jon Duplantier
Anthony Kay
Kohei Arihara
Kona Takahashi
Cody Ponce wants on your list.
He would be on the KBO to MLB List, not NPB to MLB.
That list would be: Cody Ponce
Andrew Anderson
Ryan Weiss
Riley Thompson
Adam Oller
Anders Tolhurst?
What ever happened to Charlie Barnes?
So far, I haven’t heard anything about whether or not Tolhurst has re-signed but I would not be surprised if he does so with LG in order to get a full season in the KBO under his belt
Got injured, then released by the Lotte Giants before signing with the Cincinnati Reds AAA team. Small sample, but he did cut his walk rate to 4.3% in 24 IP (6 starts) and had a strikeout rate of 23.1 %
He’s in the kbo you dope
I hate to be that guy, but would the author please look up the definition of “pristine” before using it again.
Yep
Maybe his team will do a buy one get two free sale so Darwinzon Hernandez and Roberto Osuna come back too. Honestly there are plenty other ex MLB guys over there I’d rather sign than him just due to their pitching profile so I’d skip him and try someone like Anthony Kay or Andre Jackson.
Half right, no one would want Osuna especially considering his strikeout rate fell off to about 15% and his walk rate went up to about 6%. Also Andre Jackson was worse than Arihara in just about every single metric save for average fastball velocity (94.2 MPH) and ERA.
Wow, there must be nothing going on to write an article about right now.
Well, it is turkey weekend …
I don’t mind these kinds of articles shedding some light on players who otherwise might slip through the cracks.
Injury or not, his NPB numbers are worse than when he came over the first time. 8.6 H/9 and 6.2 K/9 in the NPB aren’t going to translate well.
Cheap depth for a contender, affordable innings eater for a rebuilder. I doubt he gets tons of great offers, but given how expensive even the halfway decent pitchers are nowadays, he might get a 1-2 year pact at $5M AAV or something. Or, he comes back as a reliever and maybe his stuff plays up if he’s only throwing 1-2 innings at a time rather than trying to go 5-7 innings at a time.
This. NPB = AAA KBO = AA
Yes and no, there’s wider margins of talent due to a lack of depth in comparison to MLB and MILB. NPB has better depth than KBO in terms of pitching especially and is in a deadball ERA whereas KBO is more hitter friendly.
NBP has a minor league as well.
Minor league deal with spring training invite