If you've ever lost a few bucks on a parlay and felt the urge to blame a player, please don't slide into their DMs. The NBA knows that kind of harassment happens, and with the new season tipping off Tuesday, it's doing something about it.

According to a league memo obtained by ESPN's David Purdum, the NBA has told its partner sportsbooks, including DraftKings and FanDuel, to stop offering several kinds of bets this season. It's also rolling out new ways to protect players from angry gamblers.

What's off the menu

Quick glossary: a prop bet is a wager on one player's stats. A parlay strings several bets together for a bigger payout, but you only win if every piece hits. Betting the under means betting a player will finish below a number.

Starting this season, per the memo, partner sportsbooks can't offer:

• Parlays built on the under for the same player's stats.

• Bets on who wins the opening tip.

• Bets on a player missing specific shots.

• Under bets on players expected to play fewer than 12 minutes.

The memo described some of these as "low likelihood, high payout bets." Sportsbooks also can't offer alternate under lines with bigger payouts.

Why these bets, specifically?

Because they've shown up in real scandals. Parlays on a single player's unders appeared in federal cases involving Jontay Porter and Terry Rozier, ESPN reported. Porter admitted in court that he intentionally took himself out of games early to benefit bettors while with the Raptors. Rozier has pleaded not guilty and denied wrongdoing. After the Porter scheme came to light, the league had already banned under bets on players with two-way contracts.

"Seeing where we may have had issues in the past is one of the inputs to determining the types of things that we think could be problematic," NBA executive vice president Scott Kaufman-Ross told ESPN.

The league also doesn't want to push gamblers somewhere sketchier. "There's a balance between ensuring that we are removing problematic bet types but also ensuring that we don't just move activity into the illegal market," he said. The NBA estimates its partner sportsbooks handle upward of 99% of the U.S. betting market, which is why its rules carry real weight.

The part that's about people

The most human piece of the memo is about harassment. The league is updating its fan code of conduct to spell out the rules on threats from bettors. It has partnered with a service called Social Protect, which lets players opt in to find and delete harassing social media messages, and it has launched a text-message hotline for reporting threats.

Former NFL star and retired FBI agent Charles Tillman will lead in-person training on the league's betting rules. Talk about a resume. Separately, the NBA and WNBA are running a responsible-gaming campaign with the National Council on Problem Gambling this fall, reminding fans that betting should be for entertainment, not income.

What's next

The new rules cover the 2026-27 season, which tips off Tuesday, Oct. 20, starting at 3 p.m. ET. Enjoy the games, and leave the players' inboxes alone.