It's been known that he worked on his midrange shot all summer, and it vastly improved. No doubt he'll put the time and work on his 3pt shot next. Hard worker, unlike Green.

Spurs assistant coach Chip Engelland has been working with Simmons on shooting, too. He had Simmons start to shoot the ball away from his face and with a higher arc. The shooting drills have all been from mid-range, part of a plan to help Simmons make a greater impact.

http://www.expressnews.com/sports/spurs/article/Simmons-aiming-for-solid-summer-8340591.php
Yeah, he's a nice player. He could have a long career as a 3 and D guy. All teams can use somebody like that. Bruce Lee Bowen made a nice (dirty ) career out of it