An all-conference linebacker for North Texas in 1968 and 1969, Gill was a popular and outspoken team leader. Playing alongside Hall of Fame teammate Joe Greene, Gill was part of the original “Mean Green” defense as it was nicknamed in the late 1960’s. Scheduled to return for his senior season in 1970, Gill met an untimely death when a blood clot reached his lungs following a routine surgery for a knee injury he suffered on the practice field. He was survived by his wife and son and a daughter, who was born after his death. In 1971, Gill was the first North Texas player to have his number retired.