Aaron Payne makes it 5-1 in the bottom of the eighth when he scores on a throwing error by Portland catcher Bo Cornish.
Follow along with live updates from the game.
The Beavers, who went 2-1 last week against Arizona State, play a three-game series at San Diego starting Thursday. The Ducks, who swept Arizona, host Portland on Tuesday and then host a three-game series against Washington on Thursday.
Aaron Fitt took readers' college baseball questions on March 25.
Did righthanders Michael Wacha (Cardinals) and Jose Ramirez (Yankees) boost their stocks with their spring-training performances? Which pitchers have been the most successful after having Tommy John surgery?
What happened over the past week up to March 24.