There are players who quiet a road arena, and there are players who make the building remember an old annoyance. CJ McCollum did the second one on April 20.
Atlanta's 107-106 win over the Knicks was not just about 32 points. It was about the timing of them, especially the jumper that put the Hawks ahead in the final minute. That is the part New York recognizes. For years, the Hawks' most irritating quality in this matchup was that they always seemed to have one guard ready to turn Madison Square Garden into a personal stage. McCollum is a different personality than Trae Young, older and steadier, but Game 2 suggested the function may be the same.
That matters because January's swap can look abstract until a playoff game gives it a shape. McCollum is not copying Young's style. He is filling the emotional vacancy. The Hawks needed somebody who could take a tense game, absorb the noise, and still make the possession that tilts the night. He did that, and Atlanta suddenly looked familiar in a way that had nothing to do with roster continuity.
The rest of the ending only sharpened the point. Nickeil Alexander-Walker stripped Jalen Brunson in the final 30 seconds. Jalen Johnson turned the next play into a dunk that pushed the Hawks' lead to four. Even after that, the defining image stayed with McCollum, because stars get assigned the temperature of a series. When Bridges missed at the horn, the night belonged to the Hawk who had already decided he was comfortable being disliked here.
That is why this felt culturally complete, not just tactically useful. Atlanta did not merely get scoring from McCollum. It got a New York problem.