Did a bit of research and found this tid-bit from NBA TV's Rick Kamla in his thumbnail summary of the 1st round draft choices playing in the 2006 Summer league:
5. Shelden Williams, Hawks: The banger from Duke had the game-winning basket in Atlanta's RMR finale, and he flirted with a double-double (10 and 9) in the previous game. That said, Williams did not earn All-Revue honors so he didn't make a huge splash in Salt Lake.
Then on the Hawks web site the following summer this review of Shelden by Micah Hart on August 8, 2007 of his rookie year and what Micah thought Shelden should work on:
Shelden Williams
2007 Stats: 5.5 ppg, 5.4 rpg, 46% FG, 76% FT, 0.5 bpg
2007 Highlights: Shelden's productivity in his rookie season was quite parabolic (did I just blow your mind with that math reference?). He started out playing well, receiving a lot of playing time in the absence of various Hawks players, then saw his production dip severely when his frontcourt brethren came back healthier. The Landlord rebounded (figuratively and literally) late in the season though, taking advantage of increased floor time to win Rookie of the Month honors for the Eastern Conference in April. He finished the season with four straight double-doubles (and led all rookies in that category on the season), including 16 points and 17 rebounds in the season's penultimate game against Milwaukee.
What he needs to work on this summer: Shelden played most of last season as a power forward, but started to come on strong when he was switched to the 5. If he projects to play more center in the future (or really, wherever he plays), he needs to shoot better from the field. 46% FG for a big man is subpar. At times last year, Shelden appeared to be trying to do too much at one time (a problem for almost every NBA rookie). If he works on continuing to develop a few go-to moves and stays away from his weaknesses, his shooting percentages and scoring average should go up.
I like the kid and his upside. It's almost as if his confidence isn't there yet as he seems to hesitate on offense. Defensively, he seems to have no fear and can bang but ................ hmmmm, always a mysterious "but" at the end of discussing Shelden. I wish him the best and if he can get 10 rebs in 20 min and near 10 pts then good bench big guy. He's played two summer leagues now so he is not eligible for this summer.