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The MLB All-Star Game is one of baseball’s biggest annual events, bringing together the sport’s top talent for the Midsummer Classic. While the game itself is an exhibition, fans can still follow the action through prediction markets, where prices update in real time based on how the market views each possible outcome.
Unlike traditional sportsbooks, prediction markets let users buy and sell contracts tied to specific All-Star Game results. Prices fluctuate throughout the day as traders react to a constantly evolving marketplace.
One feature I like is the ability to close out a position before the game ends. If the market moves in your favor after you buy a contract, you can sell it to lock in a profit rather than waiting for the final result. Of course, you can also hold your position until settlement if you prefer.
On this page, we’ll take a closer look at MLB All-Star Game prediction markets, with a particular focus on Polymarket and the different contracts available for the Midsummer Classic.
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What Are Prediction Markets?
Prediction Markets vs. Traditional Sportsbooks
Prediction markets and sportsbooks both let fans take a position on sporting events, but they operate very differently. A sportsbook posts betting odds and accepts wagers against the house. Prediction markets, by contrast, allow users to trade outcome-based contracts with one another, creating prices through an open marketplace.
Some of the biggest differences include:
- Prices are established by traders instead of a sportsbook.
- Contract values fluctuate continuously as buying and selling occur.
- Positions can be closed before the market settles by selling your contracts.
- The current price represents the market’s estimated probability of the outcome.
- Trading takes place on an exchange rather than against a bookmaker.
Most prediction market contracts are priced between $0 and $1. If your prediction is correct, the contract settles for $1. If it isn’t, it settles for $0.
Example: Trading the Over 7.5 Runs Market
Suppose the Over 7.5 Total Runs contract for the MLB All-Star Game is trading at $0.54, implying the market believes there’s about a 54% chance of at least eight runs being scored.
Here’s one possible trade:
- You purchase 100 Over 7.5 contracts at $0.54.
- Your total investment is $54.
As the market reacts to lineup announcements, pitching changes, or early game action, the contract price may increase.
For example:
- The contract rises to $0.72.
You now have two choices:
Option 1: Sell Early
- Sell your 100 contracts for $0.72 each.
- You receive $72.
- Your profit is $18.
Option 2: Hold to Settlement
- If the game finishes with eight or more runs, your contracts settle for $100.
- If seven or fewer runs are scored, the contracts expire at $0, and you lose your original $54 investment.
The ability to trade in and out of a position before the final outcome is what separates prediction markets from traditional futures bets, which are generally locked in until the event concludes.
All-Star Game Markets
In this article, we’re going to focus on the following MLB All-Star Game markets from Polymarket:
- Moneyline
- Spread
- Over/Under
Moneyline: American League (45¢)
I like the value on the American League, who are listed as underdogs for this game. We can get them at 45 cents despite arguably having a better roster, including AL MVP frontrunner Yordan Alvarez and the hottest hitter in baseball, Junior Caminero. While the NL has the edge on the mound, it’s not like the AL doesn’t have good pitching, either, as Dylan Cease has been phenomenal this season. The AL has won 10 of the last 12 meetings, as an added bonus here. But the main appeal is the price at 45 cents.
Spread: American League +1.5 (62¢)
I’ll add the American League +1.5 because these tend to be close games. Three of the last five games have been one-run games. In fact, last season it went to a swing-off. Adding the American League +1.5 can protect me in case they lose by only one run. While it’s a bit expensive at 62 cents, it’s worth a look given the AL’s recent dominance over the NL. Remember, Shohei Ohtani isn’t playing for the NL, which is a big loss.
Total: Over 7.5 Runs (54¢)
We’ll finish it off with Over 7.5 runs. This is a low bar for a hitter-friendly environment like Citizens Bank Park. We’ve seen the All-Star Game go Over this number in three of the last five matchups. Last year, the score was 6-6 before the swing off, comfortably eclipsing 7.5 runs. I’ll take a shot that this happens again.
Photo Credit: REUTERS
