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Photo by: Jeff Lewis

FILE - In this Jan. 16, 2010, file photo, Cleveland Cavaliers' Shaquille O'Neal dunks the ball against the Los Angeles Clippers during an NBA basketball game in Los Angeles. The Boston Celtics have signed O'Neal. The team announced Wednesday, Aug. 4, 2010, that it had signed the 15-time NBA All-Star, who had been a free agent after spending last season with the Cavaliers. (AP Photo/Jeff Lewis, File)

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