Watch Kevin Durant's Huge Block on Shai Gilgeous-Alexander in Game 3

Not today, rook. 

Kevin Durant sent a loud message to Clippers rookie Shai Gilgeous-Alexander on Thursday night in Game 3 of the NBA. While the Warriors forward was dominating on offense, the rookie tried to go up and dunk on him. 

Narrator: It was a bad idea. 

N🚫T IN KD'S H🚫USE pic.twitter.com/g6r2cL4S2n— Warriors on NBCS (@NBCSWarriors) April 19, 2019

Durant finished with 38 points and seven assists. He also grabbed four rebounds, one block and one steal. 

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The lesson: He's Kevin Durant. Don't come after a motivated two-time NBA Finals MVP in the playoffs.