He looked lost out there. Look at Joseph first Summer League. He looked like garbage and didn't know what to do with the ball. There is so much movement and screens in the Spurs system its take awhile for a player to know all the rotations. Even Splitter and most vets that come to the Spurs in general saids it takes about a year to learn the system and usually your lost initially.
Now that he has some familiarity with the Spurs working him out and attending the Summer League last year, I am curious how he performs next month. And he isn't small. 7'0" and 250lbs is NOT SMALL.