Sean was the first player to ever have his Brown jersey number retired; that sums up just how prolific he was as a college receiver for the Bears. 

He finished his career with 251 receptions for 3,850 yards and 40 touchdowns. His career receiving yards put him 2nd all time in Division I-AA, behind only Jerry Rice. He was voted Ivy League Player of the Year in 1997, and First Team All-Ivy League in 1998. 

Sean was drafted in the 7th round of the 1999 NFL Draft by his hometown New England Patriots. He remained with the team through the end of the 2000, spending most of his time on the practice squad.

Sean honed his craft overseas during multiple NFL off-seasons early in his career with the Barcelona Dragons.

Morey joined the Eagles in 2001. He became the team's Special Teams MVP in 2003 and was named to Dr. Z's (Sports Illustrated) All-Pro team as a special teams player that year.

Sean joined the Steelers in 2004, playing in the AFC Championship game against the Patriots. He went on to captain Pittsburgh's special teams the next year when the Steelers won the 2005 Super Bowl.

Sean played his final NFL seasons with the Cardinals from 2007-2009. He once again was named special teams captain for Arizona. He was named to the Pro Bowl in 2008 as a special teamer. Morey blocked a punt in overtime that season against the Cowboys, which was returned for the game-winning touchdown by teammate Monty Beisel; it was the first time in NFL history that a game was ended in overtime by a blocked punt that resulted in a touchdown. Sean played in his second Super Bowl in 2008 with the Cardinals, but fell just short of getting a second ring in a classic finish against the Steelers.