As for Tucker’s headbutt and the ensuing decision, that was an obvious and necessary call. Sources say the league is investigating that situation, and there could be further discipline coming Tucker’s way. The NBA’s longtime disciplinarian, executive vice president of basketball operations Kiki VanDeWeghe, was sitting front row when this all happened and was glued to his phone after the game was over (Byron Spruell, the president of league operations who oversees this department, is also here).