PULLMAN, Wash. – Matt Argyropoulos’ walk-off in the bottom of the ninth won the game and the series for Washington State in a back-and-forth thriller that ended in favor of the Cougars, 8-7, on Sunday afternoon at Bailey-Brayton Field.

The Ducks (29-26-1, 8-16) entered the bottom of the ninth nursing a one-run, 7-6, lead with Madison Boer (3-6) on the hill. The right-hander had Washington State down to its last out with pinch runner Kyle Johnson at third, but Adam Nelubowich drove a two-out double off the wall in right to score the game-tying run. With Nelubowich at second, Argyropoulos recorded his first hit of the day hammering a walk-off hit into deep center field.

Boer was credited with the loss, allowing two runs on four hits in two and 2/3 innings on the hill while striking out three.

Washington State’s Anthony Drobnik (2-2) was credited with the win, tossing the final one and 2/3 innings, and shutting out Oregon on one hit while striking out three.

Oregon’s Danny Pulfer appeared to win the game for the Ducks in the top of the eighth, with a two-run double to left that scored Kyle Garlick and pinch runner Dylan Gavin. For Pulfer it was his team-leading 15th double of the season, setting a new Oregon single-season record.

For the 21st time this season, Oregon recorded double-digit hits with 11, but it wasn’t enough as WSU totaled 13.

With the loss Oregon dropped its sixth Pac-10 series of the season.

Pulfer led the Ducks with a 2-for-5 performance, driving in two runs, while Shawn Peterson was also 2-for-5 with a run driven in.

Freshman Ryon Healy got the Ducks off to a good start with a two-run homer in the first – his fourth of the season to lead the club.

J.J. Altobelli also drove in a run for Oregon.

In his third start in nine days, Alex Keudell lasted just thee and 2/3 innings on the mound. The Portland native yielded five runs on six hits, while issuing three walks and striking out two.

Scott McGough tossed two and 1/3 innings of relief, allowing one run on three hits and one walk while fanning two.

In two innings on the hill, Washington State starter Bret DeRooy surrendered three runs on three hits and three walks. In three innings of relief, Richie Ochoa allowed two runs – one earned – on three hits. Paris Shewey also appeared in relief.

Nate Blackham led WSU with a 2-for-3 effort, driving in two runs and scoring one. Taylor Ard was 3-for-3 at the plate with RBI, while Nelubowich and Colin Slaybaugh also had two hits apiece.

Oregon returns to action on Tuesday at Portland with first pitch set for 3 p.m. The season series between the two clubs is even at two games apiece.

The Ducks return to PK Park next weekend to host the Pacific Source Civil War series as Oregon ends the regular season with three games against Oregon State.

Tickets can be purchased by calling 1-800-WEB-FOOT, online at www.GoDucks.com, or in person at the Casanova Center Ticket Office.

The series begins with a 7 p.m. first pitch on Friday, May 27 as Oregon celebrates O Heroes Night at the ballpark presented by Sanipac. The Oregon Sanipac Garbage Truck will be on display in the PK Park Plaza, and clips of ‘Showtime’ - the O Heroes talent show - will be shown throughout the game.

On Saturday, May 28, it will be Armed Forces Day at the ballpark presented by the Oregon Army National Guard. A Hummer will be on display in the PK Park Plaza, with a 2 p.m. start time.

The series finale, set for 1 p.m., Sunday, will be Public Service Day. The Eugene Police Department and Eugene Fire Department will have displays in the PK Park Plaza.

Notes: Danny Pulfer extended his hitting streak to 10 games… Pulfer’s two-run double in the top of the eighth brought him to 15 on the season, a new Oregon single-season record…for the 21st time this season, Oregon recorded double-digit hits in a game, including eight of its last 10.