Which NBA basketball rivalry, dating to the 1950s when neutral-site playoff games were held at the Rochester Community War Memorial in New York, has produced 12 championship series matchups, most memorably a dramatic 1969 Game 7 at the Los Angeles Forum won by the visitors?

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Accepted Answer

Celtics–Lakers rivalry. The Celtics–Lakers rivalry is the defining feud of the NBA. It began in Minneapolis-era Los Angeles and hit its 1980s peak with Larry Bird and Magic Johnson. Boston leads the head-to-head Finals count 9–3, with the most recent Finals meeting in 2010.