Jared Stohl scored 16 points and hit four 3-pointers to help Portland beat Idaho 66-53 on Saturday night.
Nemanja Mitrovic added 15 points, and went 3 for 5 from beyond the 3-point line as the Pilots (4-1) rebounded from a loss on Friday to Kentucky.
Shawn Henderson led Idaho (1-2) with 11 points while Luiz Toledo, who had his first double-double of the season, added 10 points and 10 rebounds.
Idaho trailed just 26-23 at the half, but Portland rallied after the break, including hitting four 3-pointers, to extend the lead to 54-35 with 11:25 remaining. The Vandals would not recover.
Portland shot 53 percent from behind the arc, hitting 8 of 14.
The Pilots shot 41.4 percent overall. The Vandals shot 32.7 percent.