The McKinsey Man plays tennis

Novak Djokovic in action

The New Yorker about Novak Djokovic:

"He was a McKinsey man, hitting his percentages. His approach was scientific. He brought to mind a diagram on the side of a workout machine, isolating the necessary muscles required for each stroke, and no more..."

So McKinsey Man is now a part of the English language. It means someone who puts in the precise amount of effort required to perform a specific task, and nothing more. Interesting. That is not quite how they describe it in books like The McKinsey Mind, though.