Do NBA players actually jump their highest in games? I thought the answer would be yes, because my own best jumps came with game adrenaline and a clean lob or putback. Then I asked some of the best jumpers in the league. Their answers were all over the place.
Why I expected them to say games
If the pass is right, an alley-oop lets you attack the jump without carrying the ball through your approach. Add a defender and a crowd, and sometimes you get a jump you would never produce while staring at a measuring device. Dennis Smith Jr. told me he jumped highest in games. Cole Anthony agreed; his point was that you can just react and go up instead of thinking about the jump.
Of course, a game does not hand you a perfect runway every possession. The lane can be packed, the pass can arrive late, and you may already be tired. That is where the answers got interesting.
James White had a different answer
White talked about the stopping and starting and all the bodies in the lane. His biggest jump, he said, came in a dunk contest against Gerald Green after he had already played a game. He was warm, the adrenaline was still there, and he finally had space to jump. Ryan Hollins also pointed to big moments, but said some of his best jumps came in summer pickup when he was rested.
And then Gerald Green gave me the most Gerald Green answer possible: he said he could get out of bed and jump about the same. It is his experience, not a lab result, but it is a reminder that these guys do not all work the same way.
What this changes when I estimate a vertical
I would not throw out a practice height check just because it happened outside a game. Gerald's checks may show him higher than his famous windmill; that is in his vertical breakdown. I would not call one crowded game dunk a player's maximum either. The Steph Curry article uses warmup lobs because he rarely dunks in games. For the full set of footage estimates, see the NBA vertical table.
So the honest answer is player by player. A clean game lob might be somebody's best jump. For someone else, it might be a contest attempt or a fresh practice session. The clip matters more than the label on the setting.