SOURCE SPORTS: Boston Celtics Take Game 1 of The NBA Finals 120-108 - The Source
Al Horford on FIRST NBA Finals appearance in 15 years: 'It's been a great journey!
Boston Celtics - Wikipedia
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Celtics news: Al Horford on reaching NBA Finals after 141 playoff games
Al Horford reaches NBA Finals after 141 playoff games, Sixers player now holds record
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Celtics veteran Al Horford waited a long time to make it to the NBA Finals - The Boston Globe