LeBron James and the Boston Celtics had one of the most heated rivalries between 2008 and 2012. It got to a point where starting center Kendrick Perkins was praying for a LeBron James ACL Tear, according to the big man. After many heated battles in the regular NBA season, Lebron James’ Cleveland Cavaliers and the Boston Celtics met in the 2008 Playoffs. While the Boston Celtics were favoured, the Cavs were able to take the series to seven games thanks to their superstar. In a low-scoring game 6, LeBron had 32 points, 12 rebounds, six assists, and two steals to force a Game 7. In Game 7, Lebron would drop 45 points. However, the Celtics would narrowly win at home. The Celtics would eventually win the NBA Championship in 2008.