Plumlee netted 16 points to go with 14 rebounds while Kelly chipped in 14 points and 10 rebounds for the Blue Devils (9-0), who remained undefeated heading into a 10-day holiday layoff.
Quinn Cook supplied 14 points in Duke's win.
Owls leading scorer Khalif Wyatt was limited to just six points on 3-of-15 shooting for Temple (6-1), which lost for the first time this season.
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