Tatum played LeBron in 1-on-1 when he was a kid LeBron James is obviously the biggest key for the Cleveland Cavaliers in the Eastern Conference Finals, and the man who could play the most significant role for the Boston Celtics is 13 years his junior. Because of that connection, the first time Tatum squared off against LeBron on the court was when he was about 10 years old. In an interview with Michael Lee of Yahoo Sports, Justin Tatum revealed that Jayson played LeBron in a friendly game of 1-on-1 during the Cavs first NBA Finals run in 2007. Perhaps LeBron didnt remember who Tatum was, because the Celtics star had to ask King James to follow him on Twitter about five years later. Tatum mentioned his connection to Hughes in a hilarious tweet that resurfaced this week.