MISSOULA, Mont. (AP) Frank Otis scored 16 points and Weber State beat Northern Arizona 84-58 Thursday in a Big Sky Conference quarterfinals game.

Otis was 7 of 10 from the field for the game and had six rebounds for the No. 2 seed Wildcats, who play North Dakota in Friday's semifinals. Davion Berry added 13 points, six rebounds and six assists. Kyle Tresnak had 12 points and six rebounds, and Scott Bamforth had 12 points.

Weber State (25-5) led 36-21 at halftime. The Wildcats shot 53.6 percent from the field for the game, while Northern Arizona shot 37 percent. Weber State outrebounded seventh-seeded Northern Arizona 36-27. Weber State made 19 of 23 free throws (82.6 percent).