Horne led the Golden Hurricane (4-3) with 30 points, his career high.
DeShang Weaver had 13 points for Oral Roberts (4-3). Abmas, the reigning Division I scoring champion, hit 13 of 15 free throws.
Why Georgetown's return to glory has failed to launch under Patrick Ewing
Five years in, the school's greatest player has yet to produce an NCAA tournament win as head coach. What has gone wrong, and can he still fix it?
No. 15 USC shakes off slow start to rout Arizona State
— Drew Peterson scored 16 points and No. 15 Southern California shook off a slow start to defeat Arizona State 78-56 on Monday night.
NCAA Bracketology: Projecting the 2022 March Madness men's field
The Bruins, who host top-seeded Arizona Tuesday night (11:00 p.m. ET, ESPN), have won three straight to see their bracket stock rise.