Olynyk also hauled down 10 rebounds for the Bulldogs (15-1, 2-0 WCC), who notched their sixth straight win.
Elias Harris supplied 14 points and Gary Bell Jr. added 12 in Gonzaga's victory.
The Broncos (12-4, 0-1) were led by Kevin Foster with 29 points, three assists and three steals.
Marc Trasolini provided 19 points and nine boards for Santa Clara.
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