On March 29, during the UFC heavyweight event in Seattle, the host mistakenly announced the winner, creating a 50-second hundredfold arbitrage window for a Polymarket trader. Trader LlamaEnjoyer noticed the error and bought a Tyrell Fortune victory contract at a very low price of 1 cent, which settled at $67,608, achieving nearly a 100-fold return.
Hundredfold Arbitrage in a 50-Second Window: Complete Event Reconstruction
(Source: Polymarket)
In the match between Fortune and Marcin Tybura, after the judges completed their scoring, host Baff announced Tybura as the winner. However, the actual result was Fortune winning by unanimous decision from the three judges (29-28, 29-28, 30-27).
Watching the live broadcast, LlamaEnjoyer immediately noticed the anomaly. He observed on Polymarket that the Fortune victory contract plummeted to 1 cent immediately after the erroneous announcement, indicating that the market had almost completely ruled out the possibility of his victory. LlamaEnjoyer made a reverse buy at this extremely low price within 50 seconds before Baff corrected the mistake.
In hindsight, he revealed a detail that almost made one break out in a cold sweat: he nearly placed a $100,000 bet on Tybura at 99 cents but sensed that “something was off” just before confirming the order and canceled the original order, making the opposite decision.
“The UFC corrected the winner just seconds later. This was the easiest 100-fold return I’ve ever experienced,” LlamaEnjoyer said. He added, “Tybura absolutely could not win that match.”
Key Decision Timeline for LlamaEnjoyer
Match Ended: The three judges completed their scoring, and Fortune won by unanimous decision.
Baff’s Mistake: The host announced Tybura as the winner, and Fortune’s contract on Polymarket instantly dropped to 1 cent.
Noticing the Anomaly: Canceled the original $100,000 order intended for Tybura.
Reverse Bet: Bought the Fortune victory contract at 1 cent, investing $676.
50 Seconds Later: Baff announced the correction, confirming Fortune’s victory, and the bet settled with nearly a 100-fold return.
Predicted Market Surge: Monthly Trading Volume Exceeds $10.4 Billion
This UFC announcement error revealed a sporadic but significant pricing vulnerability within the rapidly growing prediction market sector.
According to platform data, the trading volume in prediction markets exceeded $10.4 billion in March 2026, ten times that of the same period in 2025. As of March, over 865,000 users are active on platforms such as Polymarket, Kalshi, and Opinion Markets, covering betting targets in sports, politics, financial outcomes, and cultural events.
This UFC announcement error indicates that during live events, prediction market odds can experience extreme fluctuations in a very short time due to sudden information, creating rare arbitrage opportunities for traders who can quickly identify market pricing errors. Notably, the Intercontinental Exchange (ICE), the parent company of the New York Stock Exchange, recently completed a $600 million investment in Polymarket, indicating that mainstream financial institutions are rapidly recognizing prediction markets.
Frequently Asked Questions
What is a prediction market, and how does Polymarket operate?
Prediction markets allow users to bet on the outcomes of specific events, with odds determined in real-time by market supply and demand. Contracts on Polymarket are priced based on event probabilities, settling at $0 or $1 after the outcome is confirmed. Low-probability event contracts are priced very low, but if the outcome is confirmed, the return multiplier can be extremely high; the 1 cent contract achieving a 100-fold return is a typical case.
Was LlamaEnjoyer’s action purely luck or based on strategy?
LlamaEnjoyer stated that his decision was based on live observations of the event—believing that Tybura “absolutely could not win that match”—and identifying the pricing error caused by the host’s mistake before deciding to place a bet. Quickly identifying information discrepancies and acting within a very short window is an effective arbitrage strategy in prediction markets, rather than pure luck.
What is the current overall scale and growth rate of prediction markets?
As of March 2026, monthly trading volume in prediction markets has surpassed $10.4 billion, ten times that of the same period in 2025, with over 865,000 users active on major platforms worldwide. The ICE’s $600 million investment in Polymarket shows that mainstream financial institutions are officially entering this emerging market.
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