Fighters’ Itoh in Shouting Match with Seibu Dugout — Video Goes Viral, Sparks Debate Over What Really Happened

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The story

A video showing Nippon-Ham Fighters pitcher Itoh locked in a tense stare-down with the Seibu Lions dugout during a game has gone viral, sparking a flood of reactions on 5ch’s live-game-thread board (“Nandemo Jikkyou G”). The early theory was that Itoh snapped back after a Seibu coach accused him of sign-stealing, but partway through the thread another account surfaced claiming the real trigger was Fighters pitching coach Kuroda scolding him for “too much rosin.” Posters remain divided over which explanation is true. Seibu’s Genda reportedly looked visibly riled up too, and some pointed out that the rosin theory alone doesn’t explain that.

What people said

1AnonymousSep 12, 2026 20:57
Seibu coach accuses him of sign-stealing

Itoh loses it and starts talking tough
6AnonymousSep 12, 2026 20:59
Wait, does the batting side even steal signs? Didn't know that was a thing
7AnonymousSep 12, 2026 20:59
Itoh's the type to clap back at baseless accusations, that's just how he is
8AnonymousSep 12, 2026 20:59
Itoh's straight up getting in their face while complaining
11AnonymousSep 12, 2026 21:00
Come to think of it, Reyes did that too
Guess the Fighters are just that kind of team
16AnonymousSep 12, 2026 21:02
This Kuroda guy's always causing drama, isn't he
18AnonymousSep 12, 2026 21:02
He probably got rattled after giving up a hit and glanced over in a panic
19AnonymousSep 12, 2026 21:03
Why would Itoh be the one stealing signs though
21AnonymousSep 12, 2026 21:03
Re: #19
Because he can't get anyone out otherwise
20AnonymousSep 12, 2026 21:03
Isn't sign-stealing itself fine? It's only relaying it to the batter that's actually against the rules
23AnonymousSep 12, 2026 21:04
If he's staring at the opposing dugout from the mound for no reason, of course people are gonna suspect something
24AnonymousSep 12, 2026 21:04
This has probably already made the rounds to the other five teams by now
25AnonymousSep 12, 2026 21:04
Maybe it had nothing to do with sign-stealing and was just 'quit stalling'
Itoh really does take forever between pitches
52AnonymousSep 12, 2026 21:10
Re: #25
Probably this, though I don't really know
26AnonymousSep 12, 2026 21:04
If anything he's out there doing fan service, signing autographs for people (pun: "sain" means both "signal" and "autograph")
32AnonymousSep 12, 2026 21:05
There was a theory that Itoh kept staring at the Seibu dugout because Seibu was stealing signs, but
if the battery isn't even giving signs at that moment, him looking at the dugout wouldn't mean anything
33AnonymousSep 12, 2026 21:06
Lol the coach butting in like that
Just fire the guy already
34AnonymousSep 12, 2026 21:06
Did Itoh call out some suspicious move by Seibu, like 'that's not right'?
44AnonymousSep 12, 2026 21:09
Re: #37
So it was just Kuroda being paranoid then?
49AnonymousSep 12, 2026 21:10
Re: #44
Lol, their little 'treasure' getting all pissy (likely a nickname for a Seibu player)
47AnonymousSep 12, 2026 21:09
The pitcher stealing signs?
Was it during a stolen-base, hit-and-run, or squeeze situation?
53AnonymousSep 12, 2026 21:11
Re: #47
No, it was two outs, so that's not it
Wonder why Itoh was glaring at the dugout then
57AnonymousSep 12, 2026 21:11
Re: #47
Stealing a base is about the only thing it could be
51AnonymousSep 12, 2026 21:10
Isn't it fine if Itoh himself is just watching and guessing the signs on his own?
66AnonymousSep 12, 2026 21:12
Re: #51
Dunno, but isn't not doing it just basic etiquette?
Satozaki said sign-stealing is something you could pull off if you tried (Tomoya Satozaki, ex-catcher turned TV commentator)
73AnonymousSep 12, 2026 21:16
Why's Reyes even mad about this
86AnonymousSep 12, 2026 21:24
Re: #73
To boost his likability
89AnonymousSep 12, 2026 21:27
So Itoh suspected sign-stealing and complained about it?
97AnonymousSep 12, 2026 21:29
Re: #89
That actually makes sense
That's why he was glaring at the Seibu side
92AnonymousSep 12, 2026 21:27
How does looking at the dugout count as sign-stealing?
Are you okay?
98AnonymousSep 12, 2026 21:29
Re: #92
Catchers do check out the opposing dugout and base coaches sometimes
99AnonymousSep 12, 2026 21:30
Re: #92
Signs for stuff like hit-and-runs or bunts
116AnonymousSep 12, 2026 21:33
During the game, a lot of rosin dust kicked up, and when coach Kuroda pointed out 'that's too much rosin,' Itoh reacted with visible displeasure — the exchange escalated into a heated argument between the two.

Where's the sign-stealing in THAT?!
Seriously, this board is nothing but BS artists now, nanJ is done for
118AnonymousSep 12, 2026 21:34
Re: #116
Okay, THIS makes sense
Maybe he was just downwind?
119AnonymousSep 12, 2026 21:34
Re: #116
Lol every self-proclaimed know-it-all on nanJ was insisting it was a sign-stealing argument
130AnonymousSep 12, 2026 21:36
Re: #116
The rosin theory (with Kuroda as the trigger) still doesn't explain why Genda was pissed off though

Background and Points of Debate

In pro baseball, the mind games on the mound mean that a pitcher or catcher merely glancing toward the opposing dugout is often enough to trigger sign-stealing accusations. In this case, the early part of the thread was dominated by the theory that Seibu had accused Itoh of stealing signs, but partway through, posts surfaced describing a different chain of events — that Itoh reacted badly after Fighters pitching coach Kuroda warned him about excessive rosin use. Opinions remain split, with no consensus reached. Some also pointed out that the rosin theory fails to explain why Seibu’s Genda also appeared visibly agitated, so even on 5ch the true cause hasn’t been pinned down. It’s worth noting that live-game threads are dominated by real-time reactions posted while watching the broadcast, without any input from the people actually involved, so speculation tends to spread quickly. The footage alone doesn’t reveal exactly what Itoh was arguing about, and without an official explanation from the team or the player himself, this is a story where firm conclusions should be avoided.

*This article is compiled and summarized from the 5ch (Nandemo Jikkyou G) thread “[Video] Fighters’ Itoh Nearly Brawls After Being Accused of Sign-Stealing.”

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