Washington D.C. lost one of its favorite adopted sons over the weekend as Arnold “Red” Auerbach passed away at the age of 89. Best known as the patriarch of the Boston Celtics, Auerbach had close ties to D.C., the city he called home for much of his life. Auerbach attended George Washington University from 1937-1940, starring on the basketball team as the team’s top scorer. In 1946, after stints in the Navy and as…