• Luka Doncic hit an epic step-back 3-pointer on Sunday that evened the Dallas Mavericks and Los Angeles Clippers’ first-round series at 2-2.
  • The Mavericks’ owner, Mark Cuban, told The Wall Street Journal that he was watching the game on an elliptical and ran around the house, shirtless, dripping with sweat, hugging his family after Doncic’s winning shot.
  • Doncic is averaging a triple-double in his first playoff games and looks like a draft-night steal for the Mavs.
  • Visit Insider’s homepage for more stories.

Mark Cuban lost it when Luka Doncic hit a step-back, buzzer-beating 3-pointer that gave the Dallas Mavericks a 135-133 win over the Los Angeles Clippers on Sunday and evened their first-round playoff series at two games apiece.

The Mavericks owner told The Wall Street Journal’s Jason Gay that he was working out on an elliptical during the game – his custom, he said, because he gets too “intense” to watch with his family.

luka doncic game winner

Foto: Luka Doncic after his winning shot on Sunday. Source: Kevin C. Cox/Pool Photo/AP Images

With 3 1/2 seconds left and the Mavs trailing by one in overtime, Doncic crossed up the Clippers’ Reggie Jackson and then unfurled one of his signature step-back jumpers. It went through the net as time expired, giving the NBA one of its first iconic moments of the “bubble” in Walt Disney World. Cuban was ecstatic.

“I was shirtless, dripping with sweat from more than two hours on the elliptical, but I ran full speed screaming into the living room and chest bumped with my son [Jake] and grossed out my very happy wife [Tiffany] with a huge hug,” Cuban told Gay.

Watch Doncic's shot below:

Cuban later went on Twitter and heaped praise on Doncic.

Doncic was considered the top prospect in the 2018 draft before slipping down draft boards shortly before draft night. The Mavericks traded the No. 5 pick and a 2019 first-round pick to move up to No. 3 to draft him.

At 21 years old, Doncic is averaging 31 points, 10 rebounds, and 10 assists a game in the first four playoff games of his career.