[1] He played college football for the University of Maryland, and was selected by the Green Bay Packers in the seventh round of the 2013 NFL draft.
[3] During his junior year, he had 1,025 receiving yards and 13 touchdowns; he finished with four interceptions on the defensive side of the ball.
He continued to improve during his senior year, being a key contributor to the team as they advanced to the Division 1A South Region playoffs.
[3][5] He had his longest catch of the year on a 13-yard reception against the Virginia Tech Hokies[7] Dorsey began to see an expanded role on the Terrapins offense in 2010, seeing the first start of his college career.
[7] Dorsey became the number one receiver for the team and had ten starts on the 2011 season, missing only two games due to a hamstring injury.
He made a visit to the Green Bay Packers in March and stated that he "fell in love" with the team's unity and planned to sign there if he went undrafted.
[12] On August 27, 2013, Dorsey was placed on injured reserve list with a toe injury and remained there for the entire 2013 season.
[14] On October 6, 2014, the Packers signed Dorsey to the active roster, to make room for him, tight end Ryan Taylor was released.