The NBA slam dunk contest 2010 again highlighted NBA All-Star festivities. For the NBA slam dunk contest 2010, LeBron James didnt show up, as many hoped he would. But instead of James, the roster included a two-time champion, and three challengers trying to stop him from breaking a record. Nate Robinson was battling a groin injury, yet in the NBA slam dunk contest 2010, he did what the likes of Michael Jordan and Julius Erving havent win the competition for a third time.