The Roseburg High boys basketball team rode an unpredictable high-scorer to a predictable result Tuesday night. Spencer Johnson scored 14 points as the Indians’ starters were able to kick back for the majority of a 75-25 nonleague win over Ashland at Robertson Memorial Gym. Johnson, a freshman guard and younger brother of senior Alex Johnson, has been swinging from junior varsity to varsity all season. After the Indians jumped out to an early 18-2 lead, he was able to jump in on the action and scored eight points in the second quarter. Alex Johnson had 11 points for the Indians …