Cliff Colimon scored 28 points to lead Eastern Washington to a 77-64 victory over Idaho State on Tuesday night in a game at Cheney where home-court advantage for a rematch in the Big Sky tournament was at stake.

Laron Griffin had 18 points and 12 rebounds for the Eagles (14-16, 8-8), who are the No. 4 seed in the league tournament that begins Saturday. They will host the fifth-seeded Bengals (9-20, 7-9).

IDAHO ST. (9-20)

Grabau 4-9 6-10 15, Moreira 2-5 0-0 4, Morgan 2-10 4-4 8, McGowen 5-10 0-0 13, Hatchett 3-10 0-0 6, Baldwin 3-6 0-0 6, Kusmieruk 3-3 1-1 7, Martin 0-0 2-2 2, Swanson 1-3 1-2 3. Totals 23-56 14-19 64.

E. WASHINGTON (14-16)

Griffin 6-8 6-10 18, Chiverton 1-6 0-0 3, Ederaine 3-6 2-4 8, Colimon 8-15 10-11 28, Forbes 2-8 2-2 7, Kelly 3-5 0-0 9, Johnson 0-0 0-0 0, Winford 1-4 2-2 4, Hickert 0-2 0-0 0, Henry 0-0 0-0 0. Totals 24-54 22-29 77.

Halftime_E. Washington 33-29. 3-Point Goals_Idaho St. 4-10 (McGowen 3-7, Grabau 1-1, Morgan 0-1, Swanson 0-1), E. Washington 7-25 (Kelly 3-5, Colimon 2-7, Forbes 1-4, Chiverton 1-5, Ederaine 0-1, Hickert 0-1, Winford 0-2). Fouled Out_McGowen. Rebounds_Idaho St. 36 (Grabau 9), E. Washington 33 (Griffin 12). Assists_Idaho St. 12 (Hatchett 5), E. Washington 11 (Colimon, Ederaine 4). Total Fouls_Idaho St. 24, E. Washington 20. A_2,852.

Montana 66, Weber State 51: At Missoula, Will Cherry scored 23 points to lead Montana to the Big Sky regular-season championship in a winner-take-all victory over Weber State (23-5, 14-2).

The victory means Montana (23-6, 15-1) will host the conference semifinal and championship tournament games March 6-7.

The win gave Montana its seventh regular-season title and first since 2000.

The Grizzlies have won the conference tournament four times since then, in 2002, 2005, 2006 and 2010.