Tatum and Brown refused to be divided, and they refused to lose the stranglehold they had on this NBA Finals, delivering Boston championship No. 18.
The Celtics cruised to another dominant win in Game 5 on Monday night to claim their first championship since 2008.
The Celtics are NBA champions for the first time since 2008.
Mbappé received a yellow card after attempting to return to the field from injury. His status moving forward at the European Championship is unclear.