Giannis The best player in the NBA is the guy who wins the championship and is the best player on his team so I would say its Jaylen Brown

Jaylen Brown Throws Down the Huge Alley-oop!

James Worthy puts up 36 PTS, 16 REBS and 10 AST to clinch the championship against the Pistons in Game 7 of 1988 NBA Finals

Jaylen Brown splashes the jumper in Dillon Brooks face

Harden with his best 3-point celebration yet