Harrison spent his early years in the East Flatbush area of Brooklyn before relocating to Long Island with his family.
While playing track, he was part of the NC State's 4X100 relay team, which won a conference championship in 1996.
In football, Harrison was a three-year starting cornerback, concluding his college career with 190 tackles (nine for loss), 12 interceptions, 40 passes defended, one sack, two fumble recoveries, five forced fumbles, and four blocked kicks.
While in the NFL, Harrison played with the Washington Redskins, San Diego Chargers, and Miami Dolphins; he assumed the role of cornerback.
This biographical article relating to an American football defensive back born in the 1970s is a stub.