Hemenway and Hunter both finished 4 of 6 from 3-point range, but the rest of their teammates were 0 for 9.
Brevin Galloway scored 15 and PJ Hall added 13 off the bench for Clemson (2-1), which plays Bellarmine on Friday. Hunter Tyson grabbed 12 rebounds. The Tigers finished 31 of 55 (56.4%) despite just 11 of 18 (61.1%) from the foul line.
Clemson never trailed and led 41-32 at halftime. Hunter gave Clemson its largest lead of 19 points on a 3-pointer with 9:20 remaining in the second half.
Jordan Gainey scored 24 points, Trae Broadnax added 16 and Justin Bailey 15 off the bench for the Spartans (1-2).
The game marked only the second time the two school have played with Clemson having won both.
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