Baltimore Colts Hall of Fame defensive tackle Art Donovan. (National Football League)

Art Donovan, defensive tackle for the Baltimore Colts, January 14, 1959. (Associated Press)

Stevie MacGregor, 7, of suburban Oak Park shoves his 60 pounds against Baltimore Colt tackle Art Donovan, 6 feet, 3 inches, who weights 270 pounds on August 12, 1960 in Chicago. Professional championship team worked out on August 11 at Chicago's Soldier Field where they play the College All Stars August 12. (AP Photo/PC)

Baltimore Colts Hall of Fame defensive tackle Art Donovan. (Pro Football Hall of Fame)

Baltimore Colts veteran defensive tackle Art Donovan races onto field on Sept.16, 1962 to the salute of Colts drum majorettes and cheerleaders as he was honored prior to the Baltimore-Los Angeles Rams game. Donovan, an All-Pro choice for a number of years, retired earlier from pro football. Colt President Carroll Rosenbloom retired Donovan's jersey, number 70. (Associated Press)

Veteran defensive tackle Art Donovan brushes a tear from his eye during pre-game ceremonies on Sept. 16, 1962 in Baltimore, Maryland in which the former All-Pro was honored by the Baltimore Colts. Teammates Gino Marchetti (left) and Bill Pellington stand with Colt President Carroll Rosenbloom, shown holding Donovan's number 70 jersey which has been retired. (Associated Press)

Hall of Fame member and former Baltimore Colts player Art Donovan smiles during a half time ceremony commemorating the 50th anniversary of the Colts and New York Giants World Championship Game, during halftime of the Baltimore Ravens and Jacksonville Jaguars NFL football game, Sunday, Dec. 28, 2008, in Baltimore. (AP Photo/Gail Burton)