The 53-year wait was over . But there was still a bit of business to attend to before Jalen Brunson could begin to celebrate. It was fitting. He finished the job the same way he conducted himself throughout the whole process. With class. With humility. With champion identity. Immediately after the final buzzer of the Knicks’ 94-90 Game 5 win over the Spurs on Saturday night at the Frost Bank Center, which secured their first championship since 1973 , Brunson — as euphoria erupted around him —