Codi Miler-McIntyre added 15 points while Harris was 5 for 5 from 3-point range to lead the Demon Deacons (12-14, 5-9).
They shot 54 percent, led by double figures for the entire second half and reeled off 12 consecutive points to pull away for their biggest victory under third-year coach Jeff Bzdelik.
Durand Scott had all 17 of his points in the second half for the Hurricanes (22-4, 13-1), the last of the schools in the six BCS conferences to get its first league loss.
Shane Larkin added 13 points, Trey McKinney Jones had 11 and Kenny Kadji finished with 10, but Miami was outrebounded 36-35 by the younger, smaller Demon Deacons.
MARYLAND 72, CLEMSON 59
In College Park, Md., sophomore Nick Faust had a season-high 18 points and Maryland (19-8, 7-7 ACC) won its fourth consecutive game over Clemson (13-13, 5-9).
Freshmen Jake Layman and Shaquille Cleare scored 12 and 10 points, respectively, for the Terrapins.
Devin Booker scored 16 points for Clemson, reaching double figures for the 11th time in 14 conference games. Jordan Roper also had 13 points and Milton Jennings scored 10 for the Tigers, who haven’t beaten Maryland since 2010.
Former Maryland coach Charles “Lefty” Driesell was honored at halftime. Driesell, who coached the Terrapins from 1969 to 1986, compiled a 348-159 record, won an ACC title and led the Terrapins to eight NCAA Tournament appearances. The Maryland athletics department will also dedicate a bronze bas-relief of Driesell in a ceremony at Comcast Center on April 16.
NORTH CAROLINA 76, NORTH CAROLINA STATE 65
In Chapel Hill, N.C., Reggie Bullock had 22 points and 13 rebounds to help North Carolina (19-8, 9-5) beat rival North Carolina State (19-8, 8-6).
Freshman point guard Marcus Paige added 14 points and eight assists for the Tar Heels, who have won three consecutive games to build momentum and climb the league standings.
North Carolina went ahead for good with an 18-2 run in the second half while holding the Wolfpack to a single basket during a nearly 5-minute stretch.
James Michael McAdoo also scored 14 for North Carolina, while P.J. Hairston added 12.
Scott Wood scored 19 points to lead the Wolfpack.