https://www.cbssports.com/nba/news/jontay-porter-gambling-investigation-explained-what-we-know-as-nba-looks-into-prop-bet-irregularities/
After the Jan. 26 game against the Clippers, DraftKings sent out a daily report to users that stated that the under on Porter's 3-pointers was the biggest money winner for bettors among all NBA props from that night of games. After the March 20 game, a DraftKings media release stated that Porter prop bets were the No. 1 moneymaker for that night of NBA games.
While the exact number will vary based on the book, the bettor and a number of other factors, prop bets are generally limited to between $1,000 and $2,000. One source told ESPN that multiple betting accounts attempted to place bets upward of $10,000 and $20,000 on Porter props ahead of the Clippers game.
"People were trying to do whatever they could to bet Jontay Porter props [against the Clippers]," the source told ESPN. "And then, just a few days ago, the same thing. We had a bunch of people trying to bet under for more."