More and more people found themselves asking this question as the undrafted, 4-year college athlete started to earn more and more trust from Pat Riley and Eric Spoelstra this season. He earned enough trust from Spoelstra that the coach gave him 8.8 of his 24minutes/game in the 4th quarter, and enough from Riley that he moved Mario Chalmers to create those minutes for him. Chalmers had been with Miami his entire career, 7 and 1/2 seasons, and was a major contributor on championship teams.
There is a surprising amount of good-vibe material written about the 2 year pro, and I encourage you to read about his story.