Down by 2, Hawks player/coach Alex Hannum threw the ball off the backboard from the other end of the floor only to see Bob Pettit’s put-back attempt roll off the rim. Wouldn’t you like to have seen it? Sadly, no complete video account exists. Thus began the greatest sustained run of dominance in NBA history. With Russell as the anchor, the Celtics survived the retirements of Sharman (1961), Cousy and Ramsey (1963), Heinsohn (1965), and K.C. Jones (1967), not to mention the exit of Auerbach as coach in 1966, to keep on keeping on, culminating in the most unlikely of all Celtics triumphs, the conquest of the mighty Wilt Chamberlain/Elgin Baylor/Jerry West Lakers in the famous 1969 Game 7 “Balloon Game.”