Robertson added nine assists for the Pilots (16-12, 6-6 West Coast Conference), who have won five straight. Robertson's basket and free throw came with 27 seconds remaining and gave Portland a 75-74 lead. Kristian Sjolund sank two foul shots with 5 seconds to go to cap the scoring.
Jan Zidek had 22 points to pace the Waves (7-22, 1-13), who have dropped four straight games. Houston Mallette added 18 points. Mike Mitchell Jr. had 17 points, eight rebounds and six assists.
The Pilots improve to 2-0 against the Waves this season. Portland defeated Pepperdine 82-63 on Jan. 15.
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