Kareem Abdul-Jabbar rooted for the Celtics during his high school days in New York.Honest.He would later be involved in one of the most intense rivalries in sports, going against Boston three times in the NBA finals as a Lakers star in the 1980s.Now, that's simply a part of his past.``I saw my first Celtics-Lakers rivalry game in 1969,'' Abdul-Jabbar recalled Sunday, referring to a matchup in the NBA finals a few months after he completed his college caree

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