com StaffBOSTON - Researchers at Boston University on Monday reported finding CTE in 345 of the 376 former NFL players they have studied so far. The center noted that two players diagnosed with CTE in the past year, former Philadelphia Eagles quarterback Rick Arrington and former Kansas City Chiefs defensive tackle Ed Lothamer, once played for the teams appearing in Super Bowl LVII on Sunday.  concussion protocol last fall after it was criticized for the way Miami Dolphins quarterback Tua Tagovailoa's injury was handled