RENO, Nev. -- Ryan Richardson scored 21 points and top-seeded Weber State edged No. 8 seed Portland State 78-74 in a Big Sky quarterfinal game on Thursday.
The Wildcats (24-8) will face the winner of fourth-seeded Idaho State and No. 5 seed North Dakota in a semifinal game on Friday.
Richardson was 7 of 9 from the field, including 5 of 7 from beyond the arc, with five rebounds and four assists. Jeremy Senglin scored 16 points while Joel Bolomboy and Zach Braxton added 12 points apiece. Weber State shot nearly 58 percent and was 11 of 23 on 3-point attempts.
Weber State led 46-37 at intermission, but the Vikings chipped away to tie at 60 with 8:48 to go. It was tight from there, and Senglin's layup with 58 seconds left gave the Wildcats a one-point lead. On the next possession, Bolomboy blocked a layup attempt and Weber State held on to advance.