He appeared in only two games for Minnesota Vikings during the 1992 NFL season before suffering a career ending ACL injury to his left knee.
[3] Welborne attended Walter Hines Page Senior High School in Greensboro, North Carolina.
[2] He was rated the #1 wide receiver prospect in the country while in high school and was an All-State basketball and football player on both offense and defense.
[3] In the 1985 4A state championship game, he blocked a field goal attempt on the final play that a teammate returned for a touchdown to give the Pirates a 26–20 victory over Terry Sanford High School.
[6] As the Wolverines prepared for the 1988 season, they were well stocked with receivers (including Chris Calloway, Greg McMurtry, Derrick Walker and John Kolesar) but short on talent at defensive back.
Accordingly, head coach Bo Schembechler began to use Welborne as a defensive back during spring practice in April 1988.
[7] Welborne handled the position change well, winning the 1988 John Maulbetsch Award as the freshman player best demonstrating desire, character, and capacity for leadership during spring practice.
[8] He started all 12 games at strong safety for the 1988 Michigan football team,[8] compiling 72 tackles, five interceptions, three pass breakups, and two fumble recoveries.
[6] As a junior, Welborne again started all 12 games at strong safety for the 1989 team that compiled a 10–2 record, lost to USC in the 1990 Rose Bowl, and finished the season ranked #7 in the final AP Poll.
[12] In the 10th game of the 1990 season, on November 17, 1990, Welborne sustained a serious injury to his right knee while returning a punt 31 yards to Minnesota's 20-yard line to set up the go-ahead touchdown for Michigan.