Yusuke Akitoshi went 3-for-5 with four RBIs and Cal State Northridge took advantage of nine Hawaii walks to win the series with a 9-3 victory today at Matador Field in Northridge, Calif.

Nolan Flashman went 2-for-3 with three runs scored and Branden Berry homered in the eighth inning for the Matadors (24-14, 3-9 Big West), who won their first series in conference play.

Marcus Doi singled home two runs and Jacob Sheldon-Collins went 2-for-4 with a double and scored a run for Hawaii (18-19, 7-5), which fell 1 1/2 games back of co-BWC leaders Cal Poly and Cal State Fullerton.

Alex Hatch (3-5) walked four batters in the second inning — including two with the bases loaded — and gave up six total in five innings to take the loss.

Hawaii coach Mike Trapasso was ejected in the fourth inning for arguing balls and strikes.

Hawaii had to use its down-staff relievers with Cody Culp, Lawrence Chew and Matt Valencia all used up for the series.

Josh Pigg, Isaac Friesen and Casey Ryan combined to allow six runs over three innings.

In addition to the nine walks, UH hit four batters.

Hawaii has a nonconference game against Loyola Marymount on Monday before playing a three-game series at No. 12 UC Santa Barbara starting Friday.