More than a quarter of all helmets worn by hockey players, from the NHL to youth leagues, are unsafe, according to a study provided to "Outside the Lines" that ranked hockey helmets based on their ability to reduce concussion risk.

Out of 32 helmets in the marketplace that were tested by researchers at Virginia Polytechnic Institute and State U., nine failed to earn a single star on a five-star scale and were classified as "not recommended." Just one helmet, made by Warrior Sports, received three stars. The rest received one or two stars.

"In general, they're low performers," said Stefan Duma, the head of Virginia Tech's department of biomedical engineering and mechanics.

A judge in U.S. District Court in Minnesota denied the NHL's motion for dismissal in the current concussion litigation facing the league.

The suit was brought on behalf of several former NHL players. It alleged the NHL to be responsible for the "pathological and debilitating effects of brain injuries" caused by concussions that the former players suffered in their careers.

The NHL attempted to get the case thrown out by arguing both time-sensitivity and jurisdictional issues. The league also claimed the suit was not "adequately pled."

The FBI is investigating social media threats made against Islanders defenseman Nick Leddy.

FBI spokesman J. Peter Donald confirmed the investigation in an email Wednesday to The Associated Press.

Islanders spokesman Kimber Auerbach said Leddy and his family are safe and the NHL has been alerted to the situation.

Former Montreal head coach Mario Tremblay allegedly said that the arresting officer during a DWI stop "was being petty" like Canadiens defenseman P.K. Subban, according to an ESPN.com report on Friday.

Mike Robeiro's former nanny in Texas is suing the Predators center, accusing him of assaulting her and his wife of threatening her in 2012.

The lawsuit contains no specific details except alleging Ribeiro caused "body injury" when he acted "intentionally, knowingly and recklessly." Her attorney Larry Friedman told The Associated Press on Thursday that his client was sexually assaulted by Ribeiro soon after she had graduated from high school, though she did not immediately go to authorities because she was "terrified."

Canadian sports network TSN has issued a public apology to Maple Leafs captain Dion Phaneuf, his wife actress Elisha Cuthbert, and forward Joffrey Lupul after it aired an inflammatory fan tweet about Cuthbert and Lupul.