Sunday Setup: Charlotte provides latest unknowns after another Saturday wash

CONCORD, N.C. — For the fourth time in six races, rain washed away practice and qualifying for the NASCAR Cup Series — this time, at Charlotte Motor Speedway.Unfavorable forecasts provided ample opportunity for crew chiefs to be ready for yet another starting lineup set by the metric ahead of Sunday’s Bank of America 400 (3 p.m. ET, USA Network, HBO Max, PRN Radio, SiriusXM NASCAR Radio).MORE: Charlotte starting lineup | At-track photosBubba Wallace will take the green flag fro