Former actor and Detroit Lions lineman Alex Karras, seen in 1971, died Wednesday at age 77. In April, he joined other former NFL players suing the league for not protecting them better from head injuries. (Associated Press)

Former actor and Detroit Lions lineman Alex Karras, seen in 1971, died Wednesday at age 77. In April, he joined other former NFL players suing the league for not protecting them better from head injuries. (Associated Press)