Dan Marino and 14 other former players have sued the NFL in U.S. District Court in Philadelphia.

The 18-page complaint alleges the NFL concealed information about football-related brain injuries and misled players, claims that are similar to those made in more than 300 related lawsuits. The NFL has repeatedly denied such claims.

Boilerplate language is used in Marino’s short-form complaint. One is submitted for each plaintiff.

“On information and belief, the Plaintiff … sustained repetitive, traumatic sub-concussive and/or concussive head impacts during NFL games and/or practices,” the short-form complaint said.