Jayson Tatum, Celtics put away Mavs in NBA Finals for record 18th title

Boston got the job done to complete the series win in Game 5.

BOSTON STRONG: Jayson Tatum of the Boston Celtics lifts the Larry O'Brien Championship Trophy after Boston's 106-88 win against the Dallas Mavericks. Pic:  Adam Glanzman/Getty Images)

One of the first people to congratulate Boston Celtics star Jayson Tatum on winning the NBA championship was his 6-year-old son.

"He told me that I was the best in the world," Tatum said. "I said, 'You're damn right I am.'"