Sep. 20—BEMIDJI — The Bemidji High School girls tennis team defeated Rock Ridge 5-2 Friday afternoon, improving to 21-0 on the season. It was one of the more impressive wins of the year, considering Rock Ridge's recent ranking just outside the AA girls tennis top ten. The Lumberjacks lost just two matches to the Wolverines, one in singles and one in doubles. Liz Peterson earned an impressive …