6. Johnny Unitas
When he first came into the league, people didn’t know how to pronounce his name. But by the time Johnny Unitas retired from the league, he became the guy that future quarterback legends were compared to. Between 1955 and 1973, Unitas was named to 10 Pro Bowls and seven All-Pro teams. He’s one of only four players to win the NFL’s MVP award three times. For all his career accolades, Unitas is probably best known for leading the Baltimore Colts over the New York Giants in the NFL Championship game in 1958, which is often referred to as “the “greatest game ever played” and credited with sparking the interest in professional football in the United States.