Russell told Mike Trudell of Spectrum SportsNet he learned of his grandmother's death Sunday morning and hit the shot for her.
He added additional details:
According to Mark Medina of the L.A. Daily News, Lakers head coach Luke Walton said Russell wasn't going to play Sunday but wanted to take the court.
The Ohio State product finished with 16 points, four assists, four rebounds and three steals in the victory, which was Los Angeles' fourth in a row.
The 21-year-old is part of a young Lakers core hoping to bring consistent winning back to Los Angeles in the near future, but Sunday's shot gave him a memorable moment in the present.