Reliving Jayson Tatum's monster dunk on LeBron from the 2018 Eastern Conference Finals originally appeared on nbcsportsboston.com With the Boston Celtics getting ready to take on LeBron James' reeling Los Angeles Lakers on Saturday, it's time to relive one of the best moments from last year's Celtics playoff run: Jayson Tatum's dunk over LeBron in Game 7 of the Eastern Conference Finals. The Celtics had gotten a huge spark from Tatum during the NBA playoffs, and with a trip to The Finals on the line, Tatum made one of the biggest plays of his young career. He went up for a dunk and threw it down despite LeBron coming over and attempting to block it.