7. Chuck Hughes
Chuck Hughes was another promising player for the NFL. While in college, he set seven different all-time football records.
A notable record is Hughes' 17 interceptions in a single game against Arizona State in 1965.
He played for the Eagles for three years until joining the Detroit Lions in 1970.
During the final minutes of a game against the Chicago Bears, Hughes suddenly fell forward without any type of contact.
Players and fans thought he was faking an injury to stop the clock; however, Hughes had suffered a fatal heart attack. The game was concluded, but in silence.