The Cougars played without their leading scorer DaVonte Lacy, who missed his third straight game with a rib injury. He's missed five of the past six Washington State contests.
Stanford led by as many as 32 points in the second half.
Robbie Lemons hit consecutive 3-pointers for the Cardinal as part of a 13-2 run over the final 4:14 of the first half that snapped a 27-all tie. Chasson Randle hit a jumper at the buzzer to give Stanford a 41-29 halftime advantage.
Huestis was 0 of 7 from the floor in Stanford's victory at Oregon on Sunday. He showed up to play against the Cougars, sporting a new hairstyle and hitting 7 of 10 shots overall. Huestis, who averages 10.5 points a game, reached double figures for the first time in conference play.
Brown was 1 of 10 in Stanford's 81-72 loss to Oregon State and is 15 of 19 in the two games since.
Washington State shot over 44 percent from the field in the first half but was held to less than 30 percent in the second half, in which the Cougars scored 19 points.
Stanford received a season-high 28 points from its bench.
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Reggie Witherspoon, who spent more than 13 seasons coaching at Buffalo, is returning to the city to coach Canisius College.
North Carolina Hall of Fame men's basketball coach Roy Williams is recovering from knee-replacement surgery.
Sparkling facilities are one thing, but Tim Miles needs to regain the momentum of Nebraska's 2014 run to the NCAAs if it is to play with the big boys.