Hanson took charge in the second quarter and went on to beat Lyman 69-36 Thursday in a first-round game at the South Dakota Class B girls' basketball tournament.
Kynedi Cheeseman had 22 points and nine rebounds for the Beaverettes (22-2), who finished third in last year's tournament. Sydney Dodd added 13 points.
Hanson outscored Lyman 18-5 in the second quarter and won it going away.
Lyman (15-9) was making its first appearance in the state tournament since 1989. It shot just 35 percent from the field.
Brooklyn Halverson led Lyman with 14 points.