When it comes to dunking, the Jazz’s Donovan Mitchell might just be the perfect machine

Los Angeles • Between the takeoff and finish of a dunk, there’s an instant that hums with a rising intensity, when a crowd realizes what is about to happen.It’s punctuated with sharp intakes of breath that precedes awe. It’s an instant that leaves an imprint.Donovan Mitchell has been creating that imprint since he was 15 years old.Mitchell was asked recently if he felt like his life was about to change when he competes at the Slam Dunk Contest on Saturday night in Los Ange