The Gamecocks (4-1) were down by as many as 12 points in the first half but came back in the second. A 3-pointer by Bruce Ellington with 20.7 seconds left in regulation tied the game at 67 and forced the first overtime.
In the second overtime, Sam Muldrow hauled down a rebound and made a midrange jumper with 5 seconds left for South Carolina to tie the game at 75 and force another overtime.
After WKU (3-3) scored the first three points in the second overtime, Galloway made two layups in transition to give the Gamecocks the lead for good.
The Hilltoppers had the ball with 4.4 seconds left but were not able to get a shot off to force a third overtime.
USC Defeats Western Kentucky In Double OT
Gamecock Anthem Top Stories
LSU Elite Camp Day 1 RecapLSU's Elite Camp shined some light on some of the top running back targets for the Tigers, some new underclassmen names and plenty of other tidbits.
Tiger Blitz3:10 PM
Potential Vols commit: 'It caught my mind'Tennessee coaches and several commitments got in the ear of Jerome Carvin over the weekend. Did it have any effect with the Scout four-star offensive tackle prospect?
Inside Tennessee11:32 AM
PHOTO GALLERY IV: Camp DoerenRALEIGH, N.C. -- Here are some photos from NC State's recent summer football camp sessions.
Pack Pride10:41 AM
N.C. safety ready for Elko reconnectNorth Carolina safety Jeremiah Gray is well known to a pair of Irish coaches. He previewed his weekend visit to Notre Dame with Irish Illustrated.