A trader on the decentralized prediction market Polymarket executed a stunning 100x return in under a minute, capitalizing on a critical error made by a UFC announcer during a live broadcast. The incident occurred on March 29, 2025, during the heavyweight bout between Tyrell Fortune and Marcin Tybura.
Following the match's conclusion, veteran cage announcer Bruce Buffer initially declared Marcin Tybura the winner. This incorrect announcement caused an immediate and violent reaction on Polymarket, where users trade binary contracts on event outcomes. The price for a "Tyrell Fortune wins" contract plummeted to approximately 1 cent, while contracts for a Tybura victory spiked toward 99 cents.
The trader, known as LlamaEnjoyer on Polymarket and Verrissimus on X, recognized the potential error. In a post on X, the trader stated, "I almost bought Tybura at 99¢ with $100k. Stopped, realized something was off. Cancelled my order, scooped up 1¢ shares instead." Instead of betting on the falsely announced winner, LlamaEnjoyer purchased roughly $676 worth of Fortune's shares at the 1-cent price point.
Approximately 60 seconds later, Bruce Buffer corrected the mistake, officially announcing Tyrell Fortune as the true victor. The market corrected instantly, with the Fortune contract price surging to its maximum value of $1. LlamaEnjoyer sold the position, realizing a profit of approximately $67,000 from the initial $676 investment.
The event highlights the extreme volatility and real-time nature of decentralized prediction markets, where prices are directly tied to live information flows. It also raises questions about market integrity and contract settlement when errors originate from an official "source of truth," such as a sports league's own announcer. Polymarket, which operates on the Polygon blockchain, reportedly handled the extreme volatility without technical issues.
