Hunsinger attended the University of Florida in Gainesville, Florida, where he was a running back for coach Bear Wolf's Florida Gators football team from 1946 to 1949. He rushed for 2,017 yards in his college career, with 842 yards in 1948 and 774 yards in 1949. Hunsinger was popular with the Florida student body, and the "Humdinger Song" was written by a pair of Alabama sports writers and sung by students. Memorably, in 1948, he had a 96-yard kickoff return for a touchdown against the Alabama Crimson Tide, and his 842 total yards for 1948 would remain the Gators' single season rushing record until it was broken by Nat Moore in 1972. Hunsinger had two outstanding games in 1949, rushing for 199 yards versus the Furman Hurricanes and 174 yards and three touchdowns against the Georgia Bulldogs. He was a first-team All-Southeastern Conference selection in 1948 and 1949. Hunsinger graduated from the Florida with a bachelor's degree in 1950, and was later inducted into the University of Florida Athletic Hall of Fame as a "Gator Great."
Professional career
Chicago Bears
The Chicago Bears selected Hunsinger in the first round of the 1950 NFL Draft, and he had a three-year career with the Bears, from to. He played thirty-four games in all, rushing for 834 yards and catching twenty-three passes. Hunsinger also returned punts and kickoffs, and was the fourth-ranked kick returner in the league in, averaging 28.6 yards per return.
Montreal Alouettes
Hunsinger also played three years with the Montreal Alouettes of the CFL. He compiled his best CFL season statistically in, when he rushed eighty-six times for 516 yards and six touchdowns, and caught twenty-two passes for 421 yards and two more touchdowns. He is most remembered, however, for one play in 1954's 42nd Grey Cup. His Alouettes were leading by five points in the final minutes of the game, and were threatening to add to the lead with the ball on the Edmonton Eskimos' ten yard-line. In a 1968 interview with The Toronto Star, Hunsinger recalled,
I was right back and the play was a sweep to the left. Their right tackle broke through and I saw I wasn't going anywhere, so I decided to pass.... Just as I was about to throw, someone hit me from behind—not hard, mind you—but enough to shake the ball loose. Somebody was lying across my legs and I was sick when I looked up to see Jackie Parker taking off down the field.
Canadian Football Hall of Fame great Parker returned the ball a record ninety yards to score the game-winning touchdown. It was one of the greatest plays in Grey Cup history. Hunsinger recounted picking up his wife at Toronto's Royal York Hotelafter the game, and heading straight home to Harrisburg with a sick feeling in his stomach. He also recalled the elation of arriving at his home to find an 800-foot-long "Cheer up, Chuck" telegram with the signatures of 21,947 Montreal Alouettes fans.
