The Marshall/Waterloo boys maintained their lead and the East/Marshall girls edged into the lead after Monday’s sixth week of Wisconsin District 4 High School Bowling. Marshall/Waterloo has 50 points, with Sun Prairie second at 44.5 for the boys. East/Marshall has 38.5 points for the girls, edging the 38 of Sun Prairie. Twelve boys teams and nine girls teams — there were 13 and eight last year — are competing this year. With the odd number of girls teams, one team has a bye...