By: Matt Bowers Courtesy of GoHeels.cpm CHAPEL HILL, N.C.—Ninth-ranked North Carolina got big games from RJ Davis and Jalen Washington, jumped out to an early lead and cruised past Charleston Southern, 105-60, on Friday night in the Smith Center. Davis posted his first career double-double in points and assists, finishing with 20 points, 10 assists, five steals and zero turnovers in 26 minutes. It was his 21st career 20-point game and ninth in 13 games this season. He’s the first Tar Heel player ever to amass 20 points, 10 assists and five steals without a turnover in a single game. “I’m lost …