Roper scored 13 of his 16 points in the second half. He hit 6 of 8 from the field, including 4 of 5 from 3-point range.
Clemson (6-3), which scored the first nine points and led by as many as 31, hit 13 of its first 18 field goals in the half.
Adonis Filer contributed 14 points off the bench. Devin Booker had 12 points and K.J. McDaniels 11 for Clemson. Milton Jennings contributed 11 rebounds for the Tigers.
Junior guard Reggie Lewis scored 26 points including 6 of 8 from 3-point range. Muhammad Abdul-Aleem scored 12 for the Rattlers (4-7), who saw their three-game winning streak end.
Tigers cruise over Rattlers
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