GRAND FORKS — The last time Greg Nikitenko won a NOSA sprint car feature was on Aug. 31, 2008, at the Nodak Speedway in Minot. A number of the drivers in the 18-car field at River Cities Speedway on Friday night had yet to run their first race in 2008. And some probably didn't even have their driver's license. Age and experience definitely prevailed as the 58-year-old sprint driver from Minot won a battle of attrition to take the 30-lap feature …