On this day: Born May 7, 1933: Johnny Unitas, NFL quarterback

FILE PHOTO: Born on May 7, 1933: Johnny Unitas, NFL quarterback University of Tennessee's quarterback Peyton Manning (L) is presented the The Johnny Unitas Golden Arm Award and ring by 1979 NFL Hall of Fame quarterback Johnny Unitas December 12, in Louisville, Ky. The Johnny Unitas Golden Arm Award is given to outstanding senior quarterbacks. Manning is a strong candidate for the Heisman Trophy. REUTERS/John Sommers II/File Photo

(Reuters) - Johnny Unitas has been described as the first modern quarterback but he is also an early reminder of the physical price that many pay for their glory days in the National Football League (NFL).

Unitas played almost his entire 200-plus game career for the Baltimore Colts, where he was a perfect fit, a humble guy from blue collar Pittsburgh who became beloved in an equally unglamorous city.