Mayweather defeated McGregor, his 50th opponent, in the 10th round of their match Saturday night. His victory in what he said would be his last fight gives him a 50-0 record.
While $100 million not seem like a lot compared to, say, Snap CEO Evan Spiegel — who became a billionaire six times over after taking his disappearing photo company public — that $100 million would represent a sizable chunk of Mayweather's wealth.
According to Forbes, Mayweather was worth $340 million in 2016, largely thanks to pay-per-view matches like the one he fought Saturday against McGregor. Assuming the luxury car-lover hasn't splurged in 2017, that $100 million would represent just under a fourth of Mayweather's total wealth after Saturday: $440 million.
The match against McGregor will also by no means be Mayweather's most lucrative. In 2015, Forbes reports, Mayweather earned $240 million from pay-per-view fights and sponsorships for his match against Manny Pacquiano.