Officials said the teenager, accused in the 2012 Bricktown shooting, accepted a plea deal.
Avery Myers, who was 16 at the time of the incident, was accused of opening fire on a crowd of fans after the final game of round two against the Lakers.
Meyers was originally charged with eight counts of shooting with intent to kill. However, court records indicate he entered a plea of guilty to the alternative charge of assault and battery with a deadly weapon on each count.
According to police, Myers confessed to pulling out a gun and shooting into the crowd near Mickey Mantle Drive and Reno Avenue. Eight people were hit, and one victim, 22-year-old Norman Richards, nearly died.
Officials said Myers will serve 25 years in prison with 10 years probation, and he must pay $29,347.11 in restitution along with other fines.