3 min

Who’s On First, What’s An Event Contract, I Don’t Know’s My Bookie

'Who's on First' was a mind-melter, but wait until Abbott and Costello try to untie prediction markets vs. sports betting

by Jeff Edelstein

Last updated: August 9, 2026

Prediction markets? It’s sports betting.

Prediction markets? It’s not sports betting.

That seems to be exactly where we’re at as a nation. Of course, there are gradients to the above, and us gambling folk here in our little bubble can make solid arguments for and against. 

Obviously.

But the general public? I don’t know. I don’t think they see much of a difference. 

I wish there was someone — or better yet, a comedic duo — that could help us here. If only that was possible …

COSTELLO: I’m trying to understand this newfangled thing out there, somebody told me they’re called prediction markets? I don’t understand this.

ABBOTT: (confidently) Oh sure, that’s easy. You buy a contract based on whether something will happen. Or won’t happen. For instance, the Steelers are playing the Cowboys next Sunday, right?

COSTELLO: Right-o. Oh, I love those Steelers. What a great team. Terry Bradshaw and Mean Joe Greene! They were my favorites. I love their helmets.

ABBOTT: Great! So if you want, you can buy a contract on the Steelers winning on Sunday.

COSTELLO: I can bet on it, you mean.

ABBOTT: (immediately correcting him) No no no no no. You can trade on it.

COSTELLO: What do I trade?

ABBOTT: The contract.

COSTELLO: I don’t understand. With who do I trade this contract?

ABBOTT: With whom do you trade this contract.

COSTELLO: Now you’re the grammar police. OK, smart guy, with whom do I trade this contract?

ABBOTT: The market.

COSTELLO: (looks around) Who’s the market?

ABBOTT: Why, it’s the people buying and selling the contracts, of course!

COSTELLO: And what’s this contract about?

ABBOTT: Whether the Steelers will win on Sunday.

COSTELLO: (pause) That’s a bet. My daddy taught me about betting when I was a baby, and I know a bet when I see it, and if I think the Steelers are going to win, and if I put money down on that, that’s a bet. 

ABBOTT: (patiently) No, that’s an event contract.

COSTELLO: What’s the event?

ABBOTT: The Steelers game.

COSTELLO: And if I think they’ll win?

ABBOTT: You buy “Yes.”

COSTELLO: Yes, what?

ABBOTT: (slightly louder) Yes, they’ll win.

COSTELLO: And if I buy yes, and if they win, I make money, right? 

ABBOTT: Precisely! 

COSTELLO: (points at Abbott, then loudly) That’s a bet!

ABBOTT: (exasperated) You’re not listening. It’s a prediction market.

COSTELLO: OK. What am I predicting?

ABBOTT: The result of the Steelers game.

COSTELLO: With money?

ABBOTT: (as though this should be obvious) Naturally.

COSTELLO: That’s sports betting.

ABBOTT: Sports betting is when you wager against a sportsbook.

COSTELLO: Who am I wagering against here?

ABBOTT: Another trader.

COSTELLO: (nodding slowly) So it’s sports betting against a stranger. Got it. Thanks. Have a good day.

ABBOTT: (shakes head) No. It’s not sports betting. Think of it this way: You’re taking a position.

COSTELLO: My position is the Steelers will win.

ABBOTT: Correct.

COSTELLO: And his position is they’ll lose.

ABBOTT: Correct.

COSTELLO: And whoever’s right gets the money.

ABBOTT: (pleased) Now you understand prediction markets!

COSTELLO: I understand betting.

ABBOTT: (rolls eyes) No, no. A sportsbook sets odds.

COSTELLO: Who sets the odds here?

ABBOTT: The market.

COSTELLO: The market?

ABBOTT: The buyers and sellers.

COSTELLO: The bettors?

ABBOTT: The traders.

COSTELLO: Who are betting on sports?

ABBOTT: No, they’re trading sports contracts.

COSTELLO: OK. Can I trade the point spread?

ABBOTT: Sure.

COSTELLO: The total?

ABBOTT: Of course.

COSTELLO: Player props?

ABBOTT: Absolutely.

COSTELLO: Parlays?

ABBOTT: They call them combinations.

COSTELLO: (long pause; squints and stares at him) But it’s not sports betting.

ABBOTT: (smiles proudly) Now you’ve got it!

COSTELLO: No, I’ve got a headache.

ABBOTT: (launching into an explanation) Here’s the difference: Sportsbooks are regulated by state gaming authorities.

COSTELLO: And prediction markets?

ABBOTT: They’re federally regulated.

COSTELLO: Who says?

ABBOTT: The prediction markets.

COSTELLO: (suspiciously) What do the states say?

ABBOTT: They say it’s sports betting.

COSTELLO: (throws his hands up) Finally, somebody understands this.

ABBOTT: But the prediction markets say the states don’t have jurisdiction.

COSTELLO: Over sports betting?

ABBOTT: Over event contracts.

COSTELLO: On sports.

ABBOTT: Yes.

COSTELLO: For money.

ABBOTT: Yes.

COSTELLO: Based on who wins.

ABBOTT: Yes.

COSTELLO: (leans in, speaking very slowly) And it’s not sports betting?

ABBOTT: (hesitates) Legally speaking, that’s the billion-dollar question.

COSTELLO: Can I buy “Yes” on it being sports betting?

ABBOTT: Absolutely.

COSTELLO: Where?

ABBOTT: On a prediction market.

COSTELLO: (turns to leave) I’m calling my bookie.

ABBOTT: Broker! You’re calling your broker!

COSTELLO: (without turning around) Whatever. I’ll just tell him to take the Steelers.