The Mavs superstar was hunted on defense, was ineffective on switches and fouled out with more than four minutes to play. That's no championship formula as Dallas is now facing a 3-0 series deficit.
The Celtics guard put his stamp on Game 3, moving Boston one step closer to its 18th championship.
Jayson Tatum and Jaylen Brown are on the same page about the Celtics' mindset heading into Game 4 just one win away from Banner 18.
Yahoo Sports' Dan Titus reacts to Game 3 of the NBA Finals with Jayson Tatum and Jaylen Brown leading the Boston Celtics to a 3-0 while Luka Doncic fouled out in crunch time.