Oklahoma City center Kendrick Perkins' tip-in with 1:05 left in Sunday's NBA Playoff opener should have been nullified, the NBA office said in a statement Monday. Perkins' tip gave the Thunder a 102-101 lead. Oklahoma City held on for a 107-103 victory over Denver at the Oklahoma City Arena in Game 1 in its best-of-seven series. "Kendrick Perkins was improperly credited with a basket that should have been ruled offensive basket interference with 1:05 remaining in last night’s game," the NBA statement read. "Although a player is permitted to touch the net while the ball is in the cylinder above the rim, Perkins also touched the ball while it was still in the cylinder which is a violation and constitutes goaltending.” Video of the play can be seen at www.nba.com/official.