Timofey Mozgov is listed at 7"1', so theoretically, this should never happen.
But it is the preseason after all, and the big man obviously has a little work to do to ensure his hops are ready for regular season action.
Mozgov, of course, was on the wrong end of one of the most devastating dunks in recent memory, when Blake Griffin grabbed the back of his head before elevating over him for the sensational throw-down. His last name has been used as a verb to describe similar plays ever since, though this unfortunate display may change that, at least in the immediate future.