T.J. Robinson got his 16th double-double of the season as he scored 22 points and grabbed 15 rebounds to carry Long Beach State past Idaho 77-66 on Saturday.
The 49ers (13-14) got ahead early, going into the break up 35-21 and then leading by as many as 17 points early in the second half.
They were also helped out by Casper Ware, who scored 20 points, including shooting 10-for-10 from the free-throw line. Greg Plater added 12 points and Larry Anderson had 10.
The Vandals (13-13) cut their deficit to eight points, 58-50, with about 5 1/2 minutes to go when Steffan Johnson hit a pair of 3-pointers. But they didn't get closer after that.
Johnson finished with 11 points, while Mac Hopson led the team with 15 points, including 11-for-11 shooting from the free-throw line.
Marvin Jefferson added 13 points for the Vandals.