Sam Gravley scored 16 points and Delmas Moore 12 points to support the Yellow Jackets.
It was an outstanding defensive third quarter for Greer that did in Roberson. The Yellow Jackets held Roberson to five points while scoring 24 to open a three-quarter lead, 60-40.
The first half was tight, 36-35, with Greer leading until the blowout in the third quarter.
Greer is 3-3 and plays at Byrnes Friday night.