The kid came into the NBA when he was 19 years old. 25 games into his rookie season, he tears his ACL. He tears his ACL again in year 3. That is a lot of lost time playing the game, especially at such a young stage in a players development. I understand Gordon Hayward’s injury is more extreme than tearing an ACL, but Hayward was a seasoned veteran by then and it is still taking time for his game to come back to him. Parker was supremely talented and worthy of being picked so high in the draft at the time. Unfortunately, those two ACL injuries were clearly the driving force behind him not fulfilling the promise that he once possessed. However, I think he could become one of those veteran bench players that can provide 15 points per game, ala a Marcus Morris type.