CHENEY, Wash. — In the final game of the regular season, Eastern Washington volleyball sent its only senior, Sage Brustad, off with a win. The Eagles swept Idaho on Friday night, with good offense and aggressive serving. Eastern ends the regular season with a 6-10 conference record and 12-16 overall. Bri Gunderson powered the offensive effort with 14 kills on a .600 attack percentage. EWU had seven aces against the Vandals, with a .303 attack percentage. “We knew we wanted to perform and execute to end the season with momentum to take into the conference tournament next week,” head coach…