He's proven that slide to the 2nd rd was erroneous.
Draft is just all about potential. There wasn't enough film on some of the 1st round stiffs drafted, but there was more film available for those proven commodities like Harrell.
Trez dunks the ball and never does a 1 foot finger roll. He is playing so good houston will not trade for a big and continue to use him after the original starting center gets back.