Sportsbooks see high number of bets for underdog Conor McGregor

5:58 PM ET

This week’s official announcement of the Floyd Mayweather-Conor McGregor fight generated a flurry of betting action that caused Las Vegas sportsbooks to significantly trim the odds on the favorite and left them holding lopsided action on the underdog from the UFC.

When the fight was announced Wednesday, Mayweather, an undefeated boxing champion, was listed as a minus-1,100 favorite. But by Saturday afternoon, Mayweather’s odds had nearly been trimmed in half, down to minus-600 at some shops, as books were flooded by small bets on McGregor.

At Caesars Palace sportsbooks, 140 of the first 144 bets were on McGregor, who was paying back around 5-1. Almost all of the early action was small and placed by recreational bettors. One sportsbook manager described it as “square-a-palooza.”

“Everyone and their cousin wants action on this fight,” the sportsbook manager told ESPN in an email.

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