Manny Pacquiao sealed the deal on a $12.5million (£8.4m) Beverly Hills mansion by offering the sellers four tickets to his 2 May super-fight with Floyd Mayweather.
The Filipino was battling with two other bidders for the 10,000 square-foot property but sweetened the deal with the seller by inviting them to his Las Vegas showdown.
"No doubt it helped," Pacquiao's realtor, Elsa Nelson, told USA Today. "The sellers are great fans of boxing and of Manny, so it was a big deal."
The seven-bedroom mansion comes fully furnished with Pacquaio believed to be ready to move in straight away.
The fight with Mayweather is estimated to be worth around $300m.
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