It's certainly hard to believe, but there was once a time period where professional football players were expected to play multiple positions.
When we look at the game today, it's almost like we couldn't imagine any players playing offense and defense, as there would simply be too much work and they would just overwork their bodies. But that wasn't the case 60 years ago.
With that being said, let's pay some respect to some of the best two-way players in NFL history.
Lou Groza was quite the physical specimen.
Groza played from 1946 until 1959 and then from 1961 until 1967 with the Cleveland Browns.
Groza was named to nine Pro Bowls, as he was an elite offensive tackle but was also known for his field goals.
An offensive tackle kicking field goals? You bet.
Les Richter is a Hall of Fame linebacker, offensive guard and kicker.
Richter was obviously quite the athlete.
He played from 1954 until 1962 with the Los Angeles Rams, as he was named to eight Pro Bowls while also being named to two All-Pro selections.
Richter retired with a stellar 193 total points.
Bobby Layne is just an all-time great.
Layne is not only one of the greatest quarterbacks in NFL history, but he is one of the best kickers.
Layne was the third overall pick in the 1948 draft and played for the Chicago Bears, New York Bulldogs, Detroit Lions as well as the Pittsburgh Steelers.
Layne threw for 26,768 yards while being named to five Pro Bowls and is a member of the 1950's All-Decade Team.
Hall of Famer Red Badgro played offensive end as well as defensive end from 1927 until 1936 for the New York Yankees, New York Giants and the Brooklyn Dodgers.
Badgro recorded 35 career receptions for 560 yards and seven touchdowns while being named All-Pro four times.
Alex Wojciechowicz sported Nos. 30 and 50 and was an All-Pro linebacker and center for the Detroit Lions and the Philadelphia Eagles.
Wojciechowicz was named All-Pro twice and won two NFL Championships. He was ultimately inducted into the Pro Football Hall of Fame.
George Blanda wasn't one of the greatest quarterbacks to ever play the game of football, but he was a pretty productive kicker.
The Hall of Famer was named All-Pro twice while being a part of the AFL All-Time Team. He retired with 4,007 pass attempts while playing for the Chicago Bears, Baltimore Colts, Chicago Bears, Houston Oilers and the Oakland Raiders.
Red Grange may be known for being one of the best running backs in the 1920s and early 1930s, but he was one of the better defensive backs, too.
Grange was nicknamed "The Galloping Ghost," as he scored a career 32 touchdowns while being a member of the NFL 1920's All-Decade Team.
Jimmy Conzelman really did it all, as he wasn't just a head coach and an owner, but he was a quarterback and a defensive back as well.
Conzelman is a member of the Pro Football Hall of Fame and a member of the 1920's All-Decade Team. He won two NFL Championships and punched in 16 rushing touchdowns throughout his career as a player.
Sammy Baugh just did it all.
The Hall of Famer excelled at quarterback as well as defensive back and punter.
Baugh was the sixth overall pick in the 1937 draft, as he went onto win two NFL Player of the Year awards while being a member of the 1940's All-Decade Team.
Baugh retired in 1952 with a solid 72.2 quarterback rating.
Jim Thorpe is one of the greatest athletes in the history of mankind.
Thorpe wasn't just a great football player—he won gold medals in the 1912 Olympics in the pentathlon as well as the decathlon.
Thorpe played just about any position on the football field and is a member of the NFL 1920's All-Decade Team as well as being a Hall of Famer.
Gino Cappelletti may not be in the Hall of Fame, but he did win the 1964 AFL MVP Award.
Cappelletti excelled as a wide receiver as well as a kicker. He retired with 292 receptions for 42 touchdowns as well as making 52.9 percent of his field-goal attempts from 1960 until 1970.
Chuck Bednarik was one of the toughest players in NFL history, as he played linebacker and center.
The Hall of Famer, who picked off 20 passes over the course of his career, was an eight-time Pro Bowler and is a member of the 1950's All-Decade Team.
Bronko Nagurski may have been best known for playing fullback; he was so big for his position and was much bigger than most offensive linemen during his era.
Aside from playing fullback, Bronko played defensive linemen and was also a standout at the position.
All in all, Bronko was someone that you did not want to mess with on the football field.