Its me of course': Paul Pierce calls himself LeBron's greatest individual rival originally appeared on nbcsportsboston.com The Boston Celtics are getting ready to take on LeBron James and the Los Angeles Lakers on Saturday night. The Lakers and Celtics already have a long and storied history, but this matchup is drawing extra intrigue because of the history that LeBron has against the Celtics. He was a part of some great rivalries, including one he had with Paul Pierce.