Except he did not really show it in the NBA. He showed it in the Summer League, and he showed it in a few meaningless games at the end of the season when the Jazz tanked and many of their opponents either also tanked or resting their players in the playoffs. When the games mattered I remember him too often passively standing and dribbling at the 3-point line, waiting for any action to materialize inside.
Keyonte still needs to prove that he can consistently get to wherever he wants to on the court against quality teams and good defenders. He, probably, will, but it is not a given.
He took on different roles at different times during the season. I'm guessing that was mostly on coaching. I felt like he consistently showed the first step burst, the wiggle, change of speed, ability to keep his dribble alive in traffic etc, that is more specifically what I'm talking about when I say he can get wherever he wants to on the court. Obviously there were time against some of the elite on ball defenders that he struggled, but so does everyone.
