Hall of Fame center and linebacker Alex Wojciechowicz of the Detroit Lions. He played for the Lions from 1938 to 1946 and was inducted into the Pro Football Hall of Fame in 1968. (Photo by NFL/NFL)

Byron "Whizzer" White signed with the NFL's Pittsburgh Pirates, playing there during the 1938 season. He took 1939 off to study at Oxford as a Rhodes Scholar, but returned to play for the Detroit Lions from 1940-41. He led the league in rushing yards in 1938 and 1940. He also won fame as an associate justice of the Supreme Court of the United States. Appointed to the court by President John F. Kennedy in 1962, he served until his retirement in 1993.(Photo by Pro Football Hall Of Fame/NFL)

Detroit Lions end Ace Gutowsky circa 1934. He helped the Lions 1934 defense give up an astonishingly low total of only 59 points over the entire 13-game slate. Gutowsky would also finish his career in 1938 as the Lions all-time leading rusher with 2,445 yards, on 698 carries.(Photo by NFL/NFL)

Walter Andrew Kiesling had a 34-year career as a pro player, assistant coach, and head coach. He was a rugged two-way lineman with six NFL teams. He starred on the Bears' unbeaten juggernaut in 1934 and was an All-NFL player in 1929, 1930, and 1932. In 1939 Keisling got his first head coaching opportunity with the Pittsburgh Pirates. He also co-coached the merged Pittsburgh-Philadelphia and Pittsburgh-Chicago Cardinals combined teams during World War II. (Photo by Pro Football Hall Of Fame/NFL)

Robert (Davey) O'Brien, the 1938 Heisman Trophy winner, signs a two-year contract with the Philadelphia Eagles poses with owner Bert Bell. Bell, inducted into the Pro Football Hall of Fame in the inaugural class of 1963, was an owner, first of the Eagles, then the Steelers, before becoming league commisioner from 1946-1959. (Photo by Pro Football Hall Of Fame/NFL)

Jay Berwanger was the first winner of the Heisman Trophy in 1935 while he played at the University of Chicago. In 1936, Berwanger was also the first player to be drafted by the National Football League in its initial college draft; he was selected first overall by the Philadelphia Eagles. However, he chose not to turn professional and never played in the NFL.(Photo by Pro Football Hall Of Fame/NFL)

Running back Harold Grange ("Red" Grange) of the Chicago Bears heads upfield on a run. (Photo by Pro Football Hall Of Fame/NFL)

Center Mel Hein of the New York Giants. He was named first-team All-NFL center eight straight years from 1933 through 1940. He also earned second team All-NFL recognition five other times. In 1938, he was named the league's most valuable player, a rare honor for a center. He was the team captain for 10 seasons. (Photo by NFL/NFL)

Chicago Bears Hall of Fame running back Harold "Red" Grange from the University of Illinios. (Photo by Pro Football Hall Of Fame/NFL)

Hall of fame quarterback Earl "Dutch" Clark of the Detroit Lions. He played for the Lions from 1934 to 1938. He was called the quarterback because he called the plays. A true triple-threat back, Dutch consistently finished among the leaders in rushing and once completed 53.5 percent of his passes in a season when the league average was just 36.5 percent. He also led the league in scoring three times, kicked field goals and extra points and, is generally considered the last of the great drop kickers. (Photo by NFL/NFL)

Punter Ken Strong of the New York Giants poses for a 1935 photo. (Photo by Pro Football Hall Of Fame/NFL)

1937 Washington Redskins Team Photo. The team won the National Football League title in 1937. (Photo by Pro Football Hall Of Fame/NFL)

Brooklyn Dodgers Hall of Famers, Clarence "Ace" Parker and Frank "Bruiser" Kinard circa 1939. (Photo by Pro Football Hall Of Fame/NFL)

Chicago Bears Hall of Fame center George Trafton circa 1930. He was a skilled defensive player who had the moves of a halfback to go with his size and strength. He was one of the first centers to rove on defense and the very first on offense to center the football with only one hand. (Photo by Pro Football Hall Of Fame/NFL)

Dutch Clark in action for the Detroit Lions in the 1930's. The versatile Clark was All-NFL six of the seven seasons he played. (Photo by Pro Football Hall Of Fame/NFL)

Cliff Battles, a sensational running back won the National Football League rushing title in 1932 as a rookie with the Boston Braves. The next year the Braves were renamed the Redskins and Battles became the first player ever to rush for more than 200 yards in a game. He accomplished in the feat on October 8, 1933 in a game against the New York Giants as he rushed 16 times for 215 yards, and scored one touchdown. (Photo by Pro Football Hall Of Fame/NFL)

Hall of Fame fullback Bronko Nagurski. (Photo by Pro Football Hall Of Fame/NFL)

Hall of Fame fullback Bronko Nagurski of the Chicago Bears in a game against the Green Bay Packers. (Photo by Pro Football Hall Of Fame/NFL)

CANTON - SEPTEMBER 1: Antique football shoulder pads worn by players in the 1920s and 1930s. (Photo by Pro Football Hall of Fame/NFL Photos)

The 1930 Staten Island Stappletons finished with a 5-5-2 record. Led by Hall of Fame running back Ken Strong (first row, third player from the lef), the Stappletons lasted only four seasons (1929-1932), compiling a 14-22-9 record. (Photo by Pro Football Hall Of Fame/NFL)

Halfback Ernest Retner of the Chicago Bears lunges for more yardage while getting tackled in a 24 to 14 loss to the Green Bay Packers on November 7, 1937 at Soldier Field in Chicago, Illinois. (Photo by Pro Football Hall Of Fame/NFL)

Chicago Bears win over the Portsmouth Spartans in a 9-0 game on December 18, 1932 at Chicago Stadium in Chicago, Illinois. Beacuse bad weather made Wrigley Field an impossible game site, George Halas moved the game indoors to Chicago Stadium, where there was room for only an 80-yard field. (Photo by Pro Football Hall Of Fame/NFL)

Green Bay Packers Hall of Fame back Arnie Herber, Hall of Fame full back Clarke Hinkle, guard Charles Goldenberg, back George Sauer, Hall of Fame guard Mike Michalske, and Hall of Fame end Don Hutson circa 1930's. (Photo by Pro Football Hall Of Fame/NFL)

Pro Football Hall of Fame class of 1963 running back Harold "Red" Grange was nicknamed "the Galloping Ghost." He played for the Chicago Bears in 1925, and from 1929-34, and also the New York Yankees. (Photo by Pro Football Hall Of Fame/NFL)

Pro Football Hall of Fame running back Harold "Red" Grange (77) following the block of fellow Pro Football Hall of Famer and Chicago Bears teammate fullback Bronko Nagurski. (Photo by Pro Football Hall Of Fame/NFL)

Alphonse Leemans, nicknamed "Tuffy," played for the New York Giants from 1936-39. Tuffy Leemans first came to the attention of the Giants when Wellington Mara, son of then-owner Tim Mara, witnessed Leemans play a spectacular game in college. He was inducted into the Pro Football Hall of Fame in the class of 1978. (Photo by Pro Football Hall Of Fame/NFL)

Alphonse Leemans, nicknamed "Tuffy," played for the New York Giants from 1936-39. Tuffy Leemans first came to the attention of the Giants when Wellington Mara, son of then-owner Tim Mara, witnessed Leemans play a spectacular game in college. He was inducted into the Pro Football Hall of Fame in the class of 1978. (Photo by Pro Football Hall Of Fame/NFL)

Chicago full back Bill Hewitt laterals to a teammate in the Bears 23-21 win over the New York Giants in the 1933 NFL Championship Game on December 17, 1933 at Wrigley Field in Chicago Illinois . (Photo by Pro Football Hall Of Fame/NFL)

(l-r) Cecil Isabell, Andy Uram, Clarke Hinkle, Arnie Herber of the Green Bay Packers. (Photo by Pro Football Hall Of Fame/NFL)

New York Giants defeat the Chicago Bears 30-13 on December 9, 1934 in the 1934 NFL Championship game at the Polo Grounds in New York, New York. This game required the players to wear sneakers instead of cleats because the field frooze over from icy, cold weather. (Photo by Pro Football Hall Of Fame/NFL)

Pro Football Hall of Fame class of 1963 running back Harold "Red" Grange was nicknamed "the Galloping Ghost." He played for the Chicago Bears in 1925, and from 1929-34, and also the New York Yankees. (Photo by Pro Football Hall Of Fame/NFL)