Giants’ Seiji Kobayashi Set to Announce Retirement After Climax Series — Batting .077, He’ll Become a Coach Next Season

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The story

Giants catcher Seiji Kobayashi (37) is set to announce his retirement once the Climax Series wraps up, with plans firming up for him to move into a coaching role next season. This year he appeared in just 20 games and batted a dismal .077, and with the DH rule set to arrive next season — expected to make Otsuka, Kishida, Kai, and Yamase the core of the catching corps — finding playing time had become an uphill battle. On 5ch’s “Live Everything G” thread, reactions split between fans welcoming the coaching move as recognition of his defense and blocking skills, and others delivering harsher verdicts citing his weak batting numbers and how he was used in the 2024 Climax Series.

What people said

1AnonymousOct 10, 2026 11:30
With the DH coming in next season, it's basically locked in that the first-team catchers will rotate between Otsuka, Kishida, Kai, and Yamase.
They're gonna draft a few more catchers this year too, so there's no real need to keep Kobayashi around — he's pretty much set to become the battery coach in place of Sugiuchi, all for the new manager's sake.
2AnonymousOct 10, 2026 11:31
Felt like he was completely written off during that recent game against the Tigers.
13AnonymousOct 10, 2026 11:33
Re: #2
If it only took that much to give up on him, they'd already written him off back in the 2024 Climax Series.
3AnonymousOct 10, 2026 11:31
His retirement game is probably gonna be next year's preseason matchup against the Carp, huh.
4AnonymousOct 10, 2026 11:31
A guy who can't connect with a dog has no business thinking he can connect with people.
5AnonymousOct 10, 2026 11:32
Feels like having Sugano around is what kept his career on life support this long.
6AnonymousOct 10, 2026 11:32
Everyone kept saying his defense was great, but in the end it stayed mediocre the whole way through.
7AnonymousOct 10, 2026 11:32
There's a rule that says you should never spend a first-round pick on a guy who can't hit.
9AnonymousOct 10, 2026 11:32
Can't we work out some kind of slick trade for Sakakura? (Ryoya Sakakura, a Carp catcher)
11AnonymousOct 10, 2026 11:33
If it's about merch sales, that can wait until after he switches over to coaching.
17AnonymousOct 10, 2026 11:35
Huge credit to him for popularizing the grooveless catcher's chest protector.
21AnonymousOct 10, 2026 11:37
Hashigami's departure is basically a done deal anyway.
Handsome and a Giants lifer through and through.
Manager Kobayashi could actually happen someday.
23AnonymousOct 10, 2026 11:37
His defense is first-rate, so he'd make a solid battery coach.
His merch should keep selling even once he's a coach.
27AnonymousOct 10, 2026 11:38
But hey, Seiji's a good-looking guy, so it's all good 😊
31AnonymousOct 10, 2026 11:40
This guy's career stats are probably worse than Murata, Sugiyama, and Yoshihara's.
33AnonymousOct 10, 2026 11:40
Re: #24
Can't really blame people for saying the Giants' inability to cut this guy loose is exactly their weakness.
36AnonymousOct 10, 2026 11:43
The Giants are actually kind of short on catchers, so there's no way he really retires.
They might even go after Watanabe.
46AnonymousOct 10, 2026 11:49
He's probably all-time #1 in Sports Navi's game-by-game MVP voting.
49AnonymousOct 10, 2026 11:51
Re: #46
So his contribution level is actually high then.
Guess the folks on the ground recognize contributions that don't show up in the stat sheet.
47AnonymousOct 10, 2026 11:50
Just make him manager already.
He's well-liked, isn't he?
50AnonymousOct 10, 2026 11:52
Re: #47
When he's on the bench he's always hustling with the cheering and playing catch, after all.
54AnonymousOct 10, 2026 11:53
Koba-man's probably crying right now. (his fan nickname)
106AnonymousOct 10, 2026 12:27
Re: #54
What's "Koba-man"?
63AnonymousOct 10, 2026 11:58
Giants fans used to say: "Yamase was only hated by Abe — once Hashigami takes over it'll be Otsuka, Kishida, and Yamase, with Kai and Kobayashi banished to the minors." → Reality: even under Hashigami, Kai and Kobayashi still get priority and Yamase is the one banished to the minors. That's reality for you.
74AnonymousOct 10, 2026 12:06
Re: #63
Yamase hit .300 in the minors last year and that alone got him way overrated.
He's hitting .200 this year — he clearly doesn't have the goods yet.
68AnonymousOct 10, 2026 12:02
The funniest Kobayashi moment has got to be this one.

Satozaki: "Lots of people criticize catchers' pitch-calling, but pitches almost never go exactly as called — pitch-calling is all results-based judgment!!"

Same guy, Satozaki, commentating on a Giants game: "Kobayashi's pitch-calling is garbage!!!"
84AnonymousOct 10, 2026 12:14
Re: #68
Not sure which game this was, but recently there was some oddball call like a "nothing but fastballs and sliders with Raidel" restriction — if it gets the out, you might still grumble a little, but hey, it technically becomes "the right read." If he gets hit, though, it's just garbage, plain and simple.
70AnonymousOct 10, 2026 12:03
He doesn't play much, but his defense alone is outstanding — isn't there a better way to use a guy like that?
77AnonymousOct 10, 2026 12:07
Re: #70
Well, the third-string catcher basically just sits around with no playing time anyway, so it makes sense to hand that role to a defense-first veteran.

Better to let the young guys actually get game reps down in the minors.
72AnonymousOct 10, 2026 12:05
The era when this guy made the national team roster was wild, honestly.
Even if he was riding a hot streak at the plate back then.
81AnonymousOct 10, 2026 12:10
Re: #72
When you consider the other two catchers were Sumitani and Ono, it really was a weak era for the position.
96AnonymousOct 10, 2026 12:22
I'd welcome him as a coach.
(Btw, I'm a Carp fan)
100AnonymousOct 10, 2026 12:25
Re: #96
Could we just take him as the player-compensation pick in a Sakakura free-agent deal? (NPB's system letting a team that loses a free agent draft a player from the signing club as compensation)
102AnonymousOct 10, 2026 12:25
I mean, he's still better than Kai, right?
105AnonymousOct 10, 2026 12:27
Re: #102
What exactly makes you think he's better than Kai?

Background and Key Points of This Discussion

The NPB is set to introduce the DH rule starting next season, and thread commenters see the Giants’ catching corps shaping up as a four-way competition between Takumi Otsuka, Yukiyo Kishida, Takuya Kai, and Shinnosuke Yamase. While Seiji Kobayashi has long drawn praise for his defense and blocking, his playing time itself was limited, and as his .077 batting average shows, adding value at the plate proved difficult. Opinions in the thread were divided: some welcomed his move into coaching as recognition of his defensive skill and contributions to the team, while others took a harsher line, pointing to how he was deployed in the 2024 Climax Series and arguing he’d “already been written off.” Also worth noting as backdrop to this personnel speculation is the expected departure of outfield/defense coach Hashigami (rendered simply as “Hashigami” in the original text).

※This article is compiled and summarized from the 5ch (“Live Everything G”) thread “Giants’ Seiji Kobayashi (37), .077 average in 20 games, set to declare retirement after the Climax Series and become a coach.”

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