By John RittenhouseFormer Rock County residents Darrin Korthals and Anthony Mann locked up feature wins Friday at Rapid Speedway in Rock Rapids, Iowa.Korthals, a Hills-Beaver Creek High School graduate, won the first heat race and A feature in the late model street stock class.Mann, a former Luverne resident, placed second in the first heat and took the A feature in the sportsmen class.Korthals topped Luverne driver Scott Overgaard and Adrian’s Mark DeBoer and Brad Klaassen in the street stock feature.Overgaard placed second in the first heat and third in the feature. Klaassen finished first in the second heat and fourth in the feature. DeBoer placed second in the second heat and eighth in the feature.Ellsworth’s Greg Roemen raced against Mann, placing second in the second heat and 10th in the sportsmen feature.Kanaranzi’s Colter Deutsch, who locked up a track championship in the hobby stock class at Huset’s Speedway (Brandon, S.D.) Sunday, led area drivers in the hobby stock division at Rapid Speedway. Deutsch plaed third in the third heat and fourth in the feature.Luverne’s Robert Carlson (third in the first heat and 13th in the feature), Magnolia’s Larry Kracht (second in the second heat and 12th in the feature) and Magnolia’s Josh Klay (sixth in the third heat and 16th in the feature) also raced in the hobby stock class at Rapid Speedway.Deutsch won the third heat race and placed third in the feature while securing his track championship at Huset’s.Klay (second in the first heat and 14th in the A feature), Carlson (third in the second heat and 11th in the feature), Kracht (third in the third feat and fifth in the feature) and Luverne’s Cory Schmuck (sixth in the third heat and fourth in the B feature) competed against Deutsch in the hobby stock class.Luverne’s Jesse Akkerman raced in the street stock class at Huset’s, placing third in the first heat, third in the A feature and second in Nordstrom’s Dash for Cash Race.Luverne’s Andy Gebrielson had a solid night at Nobles County Speedway in Worthington Saturday. He won his heat race and placed second in the sportsmen feature.