MORO — Quarterback Riley Brown beat Elkton with his arm and legs, running for three touchdowns and passing for two more for Sherman in a 54-40 win Friday night in the first round of the Class 1A eight-man playoffs. The Huskies (8-2) travel to Camas Valley next Saturday for a quarterfinal game. Elkton, making its first playoff appearance since 1993, finished 6-4. Sherman led 24-20 at halftime and didn’t wrap up the win until Brown scored on a 15-yard run in the fourth quarter. Brandon Bowen, playing his final game for Elkton, carried the ball 11 times for 125 yards …