Young was struck in the head and tumbled to the court when he was fouled on a breakaway layup by Suns center Alex Len.
Young immediately confronted Len with a push and a punch before being separated by Len's teammates, including
Young and Len were both ejected and Morris was given a technical. The NBA will review the video, with a fine and suspension possible for each player.
The Lakers, who only had nine players available for the game because of injuries, had a four-point lead, 58-54, by halftime.
Young made four of eight shots from the field and his only free throw for nine points in 11 minutes off the bench. He also had three rebounds and one assist. Len made one of three shots for two points in 4 1/2 minutes of action. He also had three rebounds.