Infamous wife-killer Scott Peterson got an ass-whoopin’ from another inmate in a California state prison — in an altercation over pickleball … TMZ has learned.

Multiple sources tell TMZ … Peterson got into the heated confrontation Sunday in the yard near his housing unit at Mule Creek State Prison, about 40 miles southeast of Sacramento.

Our sources say Peterson hit the ball directly at the other inmate, triggering the assault. We’re told Peterson got “beat up” by the other prisoner, but his injuries were not serious enough to land him in the hospital.

Peterson had reported Laci missing … and her decomposed, headless corpse was later found floating in the San Francisco Bay. The body of their unborn child, Conner, was also recovered from the waters after being expelled from Laci’s rotting remains.

The case whipped up worldwide media attention.

Peterson was originally sentenced to death, but, in 2020, his conviction was overturned, and he was resentenced to life in prison without parole.

Peterson’s death sentence was thrown out after the state Supreme Court determined that jurors who personally disagreed with the death penalty were dismissed.

The Florida inmate who cops say was communicating with the wife of “Ghost Adventures” star Aaron Goodwin as part of her alleged murder-for-hire plot is a convicted killer himself … TMZ has learned.

Police say Aaron’s wife, Victoria Goodwin, hatched a plan to off her husband to get out of her marriage … and she allegedly enlisted a prisoner named Grant Amato to help her see the diabolical plan through.

Well, we did some digging and discovered Amato is serving a life sentence for a triple murder involving his family. A former nurse, Amato was found guilty in 2019 of fatally shooting his father, mother and brother in their Florida home.

Cops say Victoria told them she first learned about Amato in a true-crime documentary and became pen pals with him while he was behind bars.

Police say Victoria told Amato she wanted to kill Aaron and provided information about Aaron’s location and set times in California while he was filming “Ghost Adventures” with Zak Bagans.

Cops say Aaron’s wife and Amato set aside $11,515 to pay the alleged hitman … and Amato messaged someone about the alleged plot, texting them … “He’s asleep right now in the hotel room … I need to know what’s going on. Can I get an update. Was it done?”

The murder never happened … but as we first reported, Victoria was arrested last week and charged with solicitation to commit murder and conspiracy to commit murder.

Aaron told us he was blindsided by the developments, and now he’s getting court-ordered protection from her. According to new legal docs, obtained by TMZ, Victoria is barred from contacting Aaron for the next 3 months.

TMZ also spoke with Amato’s former defense attorney, Jared Shapiro, who repped him in his triple murder case, which was the subject of a Paramount+ documentary, “CTRL+ALT+DESIRE.”

Shapiro described Amato as a “normal person” until he committed the homicides, adding that he has a calm demeanor and nothing really phases him, including jail.

Shapiro also says Amato believes he’s always the smartest person in the room and comes off as “arrogantly intelligent.”

Furthermore, Shapiro says Amato enjoys the spotlight and was speaking to Paramount+ producers about the documentary while he was in jail for the murders.

What’s more, Shapiro says he’s not surprised Amato was allegedly involved in the murder-for-hire plot because he likes the attention and wants to feel useful.

Le’Veon Bell is vehemently denying a woman’s claims he raped her for years when she was an adolescent … with his attorney telling TMZ Sports the default judgment in the alleged victim’s favor is completely “bogus.”

Jada Bell said in a lawsuit filed in Franklin County, Ohio last year that she’s Le’Veon’s cousin … and when she was just six or seven years old, Le’Veon began having nonconsensual, incestual relations with her.

According to the suit, Le’Veon — who Jada says is eight years older than her — would use “slang terms” to direct her when she was just a minor, which incestual acts he wished for her to perform upon him.”

Bell’s attorney, Thomas W. Shaffer, tells us … “My client adamantly denies any and all allegations that have been lodged against him. Further, he was never served with a civil complaint or any documents.”

Shaffer says Bell was not even living in Ohio at the time he was purportedly served.

“The default judgment granted was based upon violations of his Fifth Amendment rights of due process for failing to be served,” he continued. “My client is in the process of filing a motion to open and reverse the default judgment because the narratives of the case have never been litigated.”