Education
He played college football at the University of Rhode Island and attended Lake Region High School in Eagle Lake, Florida.
He played college football at the University of Rhode Island and attended Lake Region High School in Eagle Lake, Florida.
Cassidy earned four varsity letters in both football and basketball for the Lake Region High School Thunder. He was a three-year captain of the football team and two-year captain of the basketball squad. He was a three-time team Most Valuable Player in football and team Most Valuable Player in basketball as a senior.
He helped the football team earn its first-ever appearance in the state playoffs as a sophomore in 2003 and the basketball team advance to the state semifinals his junior and senior years.
Cassidy played for the Rhode Island Rams from 2005 to 2008. He ranks third all-time in Rhode Island history with 5,005 career passing yards and 31 passing touchdowns.
He completed 261 of 440 passes for 2,759 yards and 15 touchdowns his senior year. New Orleans VooDoo
Cassidy signed with the New Orleans VooDoo on February 16, 2011.
He completed 12 of 24 passes for 150 yards and one touchdown with three interceptions as a rookie.
He was released by the VooDoo on April 18, 2011. Columbus Lions
Cassidy appeared in two games for the Columbus Lions of the Professional Indoor Football League in 2012, throwing one interception on two incomplete passes. Pittsburgh Power
Cassidy was signed by the Pittsburgh Power on April 4, 2012.
On April 14, 2012, the Power overcame a 48-17 deficit to defeat the Orlando Predators by a score of 57–54 in overtime, setting a new record for largest comeback in American Federation of Labor-Congress history.
Cassidy, who entered the game in the second quarter after an injury to Andrico Hines, completed the game-winning touchdown pass to Christian Wise. He completed 48 of 79 passes for 566 yards and 12 touchdowns with six interceptions in 2012.
He played in six games for the Power in 2013, recording seven touchdowns and four interceptions. He was released by the Power on July 11, 2013.
He was also a member of the Columbus Lions of the Professional Indoor Football League.