The Douglas boys basketball team took full control of the Sierra League title race Friday night, avenging their lone league loss this season with a 70-62 victory over Galena.Douglas extended its win streak to nine games while improving its season record to 15-6 overall and 11-1 in Northern Division I play.Galena dropped to 8-3 in league play, having fallen at Spanish Springs earlier this week and at Hug earlier this season. With four league games remaining, Douglas needs two wins or a win and a Galena loss to clinch the Sierra League title for the second year in a row."It …