The head coach of the Portland Trail Blazers and a player for the Miami Heat were arrested Thursday along with more than 30 other people in two criminal cases alleging sprawling separate schemes to rake in millions by rigging sports bets and poker games involving Mafia families, authorities said.

Portland coach Chauncey Billups was charged with participating in a conspiracy to fix high-stakes card games in Las Vegas, Miami, Manhattan and the Hamptons that were backed by La Cosa Nostra Crime families.

Heat guard Terry Rozier was accused in a second scheme to concoct fraudulent bets by exploiting confidential information about NBA athletes and teams.

The indictments unsealed in New York create a massive cloud for the NBA — which opened its season this week — and show how certain types of wagers are vulnerable to massive fraud in the growing, multi-billion-dollar legal sports-betting industry.

Both men face money laundering and wire fraud conspiracy charges and were expected to make initial court appearances later Thursday.

Also arrested was former NBA assistant coach and player Damon Jones, who is charged with participating in both schemes.

"The fraud is mind boggling," FBI Director Kash Patel told reporters. “We’re talking about tens of millions of dollars in fraud and theft and robbery across a multi-year investigation.”

Billups, who was inducted into the Basketball Hall of Fame last year, and Rozier have been placed on leave from their teams, according to the NBA. The league said it is cooperating with authorities.

“We take these allegations with the utmost seriousness, and the integrity of our game remains our top priority,” the NBA said in a statement.

A message seeking comment was left Thursday morning with Billups. Rozier's lawyer, Jim Trusty, said in a statement that his client is “not a gambler” and “looks forward to winning this fight.” Trusty said the FBI had previously said his client was not a target in the probe.