A two sport athlete in Georgetown, Joe Carroll remains a legend in Baltimore athletic history.

The hero of the 1948 upset by Calvert Hall over Loyola, Carroll was coached by former Georgetown end Joe Mellendick, and followed Mellendick's path to the Hilltop to play football. When football was dropped after his freshman year, Carroll opted to stay at Georgetown, becoming a starter on the Hoyas' baseball and basketball teams. In 1953-54, Carroll was a basketball co-captain for the Hoyas and averaged 6.9 points as a senior.

In his years after Georgetown, Carroll served as an attorney, lobbyist, and assistant attorney general for the State of Maryland. At the time of his death in 2021, Carroll was well known for 26 years as as a college football referee (having been an official at Doug Flutie's famous 1984 game versus Miami), as a high school coach at Calvert Hall and Gilman, and most recently, with 11 years as an assistant coach at Johns Hopkins until his retirement in 2007.