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I'm just assuming here, but I'm sure they have cameras or some other type of data in the stadium, and vision models running on those to make instant trades when a home run has been hit, touchdown scores, etc. and have a huge edge on retail money.

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At least on the two big sports gambling sites, they lock the app from making bets during these moments so you can't. I can verify this because I like to go to sports games and had that idea. "Oh I'm here live I wonder if this will work?" Doesn't work.

Can't speak to prediction markets, haven't touched 'em.

Yeah I have heard about gambling sites doing this, but for prediction markets I dont think they can do that. But also how can they lock it before a home run happens unless they're just locking it on every at-bat and rejecting/holding bets if a HR happens? These prediction markets have APIs and work the same way as the stock market, there are sellers and buyers in the market so messing with that process would be explicitly unfair and probably illegal.

Yes they lock it before the snap, or before the pitch is thrown. All I can figure is that they have someone at every game, or somehow have a "live-er" live feed than genpop.

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