WBC Team USA unexpectedly lost to Italy, and advancing still depends on math! However, the prediction market has already settled on "USA to advance."

2026 World Baseball Classic (WBC) Group B Preliminaries Shock the Baseball World with the Biggest Upset! The U.S. team, composed of an “All-Star lineup” from Major League Baseball, suffered a major setback after 3 consecutive wins, losing 6-8 to Italy today (11th). Not only does this introduce uncertainty into the U.S. team’s path to the knockout stage, but fans are also forced to start a complicated “math lesson.” The most absurd part isn’t the game itself, but the fact that Polymarket, the world’s largest decentralized prediction market, had already settled the outcome in favor of the U.S. team before the match even started, at the end of February.

All-Star team suffers upset, U.S. advancement depends on luck

In today’s game against Italy, the U.S. pitchers were hammered, giving up 3 home runs and falling into a humiliating 0-8 deficit. Despite a late rally, they ultimately couldn’t turn the game around, losing 8-6 to Italy. The preliminary record stands at 3 wins and 1 loss, while Italy remains undefeated at 3-0.

This loss instantly threw Group B’s qualification scenario into chaos. Tomorrow (12th), Italy will face Mexico, which is currently 2-1. If Mexico wins, the three teams—USA, Italy, and Mexico—will be tied at 3-1. At that point, they will need to compare points allowed to determine which two teams advance to the knockout stage. Now, American sports media are frantically calculating various possible scenarios, and the U.S. team’s fate is no longer entirely in their own hands.

Reality is doing the math, but the blockchain has already settled the outcome “across time and space”

Meanwhile, while the U.S. team is still waiting for tomorrow’s results to determine their fate, the crypto world is staging a parallel universe absurdity.

On Polymarket, the prediction market for “Will the USA advance to the 2026 WBC Knockout Stage” has already been marked as settled, with the result as “Yes.”

On-chain data from UMA’s oracle shows that someone submitted a proposal declaring “U.S. has advanced” as early as UTC February 27, 2026—before the preliminary rounds even heated up.

The Achilles’ heel of unguarded vulnerabilities: the fatal flaw of optimistic oracles

Why did such an absurd proposal pass? This is due to UMA’s optimistic oracle mechanism. Under this system, anyone can submit a result, and the system grants a short “challenge period.” If no one disputes the result by staking tokens during this time, the system “optimistically” treats the result as true and automatically triggers the smart contract to settle.

The ridiculous part is that no one believed the U.S. wouldn’t advance. During the challenge period of this prediction, neither the official protection bots, platform operators, nor the large community of players detected any critical errors at this point in time. With no challengers (dispute from 0x000…00), the smart contract blindly executes according to the rules, directly distributing funds to those who bet “Yes.”

However, the prediction market for “Who will advance to the WBC knockout stage” only had $1,335 in trading volume, all concentrated on the U.S. team. This also reflects that outside of single-game results, there wasn’t much participation in this market.

This article “WBC U.S. team suffers upset by Italy, advancement depends on math! Prediction market already settled ‘U.S. advances’” first appeared on Chain News ABMedia.