Joab Jerome had a game-high eight rebounds to help Winthrop (9-11, 3-5) outrebound Coastal Carolina 39-27.
On top 40-36 with 8:32 left to play, Winthrop went on a 10-2 run to take a 51-38 lead with 5:31 remaining. Smith and Henry made back-to-back 3-pointers during the stretch.
Badou Diagne's 3-pointer for Coastal Carolina cut the deficit to seven, 55-48 at the 2:38 mark, but Smith answered with his fourth 3-pointer to make it a double-digit game, 58-48, with 2:01 to play. Coastal Carolina failed to score again.
The Eagles held the Chanticleers to just 33.3 percent (8 of 24) in the second half.
Anthony Raffa led Coastal Carolina (9-10, 4-4) with 16 points, but scored only two points after the intermission.
As the Sooners look to life without superstar Buddy Hield and his sidekicks, it's clear their unseasoned players will need to grow up fast.
The Central Intercollegiate Athletic Association says it won't move its headquarters, its basketball tournament or other conference championships from North Carolina, despite
After a season that saw his shooting numbers slip, should Nigel Hayes return for his senior year at Wisconsin or take the gamble to put him name in this year's NBA draft?