With the victory, the Ducks (3-0) stayed unbeaten on the season while keeping the Rainbows (0-3) winless, and guaranteed themselves a series' win in the four-game set.
The freshman hurler Irvin surrendered a run in the bottom of the first to give the home side its first lead of the weekend at 1-0, but settled down nicely and exited after seven complete, turning the game over to the bullpen with UO on top 8-3. Irvin scattered five hits, walked two and struck out four in his first action as a Duck.
Healy continued his torrid start to the year, following up Saturday's 3 for 3 effort with a 4 for 5 day, including his first home run of the season - a solo shot in the ninth. The junior scored once and drove in a game-high three runs.
Payne, who led off the ballgame with a routine flyout to left, singled in his final four trips to the plate and scored three times. Scott Heineman, Brett Thomas and J.J. Altobelli added two hits apiece in the Oregon's offensive onslaught.
After reliever Clayton Crum got into some trouble in the eighth, the combination of new setup man Garrett Cleavinger and veteran closer Jimmie Sherfy sealed the win, combining for the final five outs.
The victory extended UO's winning streak against the Rainbows to six games, dating to last season.
The Ducks and ‘Bows wrap things up tomorrow afternoon at 3:05 p.m. PT as sophomore Jeff Gold (8-4 in 2012) is opposed by fellow righty Corey McDonald.