The New Orleans Pelicans defeated the Oklahoma City Thunder by a score of 113-110.
The NBA Western Conference game was tied at the end of the game.
Graham's shot was the longest game-winning buzzer-beater in 25 years.
He said he didn't want to take the ball out.
The visitors were in front at the Paycom Center in Oklahoma after Brandon Ingram made three baskets in a row.
Graham's three-point shot from the right side of the court, which was just beyond his own three-point line, was a shock to the system.
I thought it was going in. I was in disbelief when it went in.
The Los Angeles Lakers defeated the Dallas Mavericks in overtime.
The Lakers won their third game in a row with the game-winning three-pointer.
The Miami Heat beat the Philadelphia 76ers despite having only 10 players available because of illness, injury and positive coronaviruses.
Full NBA results.
