Dean Smith's 1992-93 squad featured George Lynch, Eric Montross, Brian Reese, Donald Williams, and Derrick Phelps. The Tar Heels started out with an 8-0 record and were ranked #5 in the country when they met #6 Michigan in the semi-finals of the Rainbow Classic. The Wolverines, led by the Fab Five in their sophomore season, won 79-78 on a last-second shot. North Carolina bounced back with nine straight wins before losing back-to-back road games against unranked Wake Forest and #5 Duke. After seven more straight wins, the Tar Heels were ranked #1 heading into the last week of the regular season (their first #1 ranking since the start of the 1987-88 season). North Carolina beat #14 Wake Forest and #6 Duke to close out the regular season and clinch the top seed in the ACC tournament. North Carolina reached the tournament final, but they lost 77-75 to Georgia Tech without Derrick Phelps, who was injured. Nonetheless, North Carolina was awarded the top seed in the East Regional of the NCAA Tournament, defeating #16-seed East Carolina (85-65), #8-seed Rhode Island (112-67), #4-seed Arkansas (80-74) and #2-seed Cincinnati (75-68) to reach the Final Four in New Orleans.  In the National Semifinals, Smith's Tar Heels defeated his alma mater Kansas (coached by future North Carolina coach Roy Williams) 78-68. In 1991, the same two teams also met in the National Semifinals with Kansas prevailing and Dean Smith being ejected. The 1993 victory for UNC set up a rematch from earlier that season with #3-ranked Michigan in the Finals.  The 1993 national title game was a see-saw battle throughout, but is remembered best for Chris Webber calling a time-out that Michigan didn't have with seconds left and Michigan trailing by only 2. Michigan was assessed a technical foul and North Carolina ended up winning 77-71, giving Smith his second national championship due to an unforced error or intentional give-away by the opposing team. After a six-year investigation by the NCAA, Webber's association and financial dealings with Ed Martin determined that there had been a series of violations and direct payments to players and was termed "the University of Michigan basketball scandal" and resulted in Michigan pulling down all of its banners and titles from that era.

Answer this question "Who did they win against?" by extracting the answer from the text above.
the University of Michigan basketball scandal" and resulted in Michigan pulling down all of its banners and titles from that era.