In Phoenix, Slovenian superstar Doncic led a total eclipse of the Suns as Dallas clinched a 4-3 series victory with an extraordinary 123-90 thrashing of the Western Conference favourites on Sunday, AFP reported.
The Suns had entered the playoffs boasting the best record in basketball after a 64-win regular season and were tipped by many to return to the NBA Finals for a second straight season.
But the Suns' dreams of a championship were incinerated by a red-hot shooting performance from Doncic and the Mavs, who will now advance to a showdown with the Golden State Warriors starting on Wednesday.
Doncic finished with 35 points, 10 rebounds and four assists while team-mate Spencer Dinwiddie provided scoring support with 30 points, including five three-pointers.
There was a similar sense of deflation amongst the Bucks players after their reign as NBA champions ended in a convincing 109-81 Game 7 defeat to the Celtics in Boston.
Celtics forward Grant Williams produced a deadly display of scoring from three-point range at the TD Garden as Boston advanced to the conference finals against the Miami Heat.
Williams led the three-point blitzkrieg with seven threes in his 27-point haul. Jayson Tatum made five-of-nine threes to finish with 23 points.
Bucks star Giannis Antetokounmpo finished with 25 points, 20 rebounds and nine assists.