Ross hauled down 10 rebounds while Jabari Brown (17 points, seven boards) also drained a clutch late shot from long range for the Tigers (14-4, 3-2 SEC), who wiped out a 13-point deficit in the victory.
Alex Oriakhi added 18 points and 11 rebounds as Missouri logged its fourth win in six contests.
South Carolina (11-7, 1-4) was led by Brenton Williams' 16 points.
R.J. Slawson also reached double figures with 12 points in the loss.
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