Slick no-look, drop-off passes to teammates for dunks. Grabbing rebounds and starting the fast break with the dribble. A soft, righty jump hook in the paint. Those were things fans didn’t see from Pistons center Andre Drummond during his promising rookie campaign, but fans did see them during summer-league action this past week. He was arguably the best player among 10 teams that played on the Orlando Magic practice floor. He averaged 15.5 points, 14.8 rebounds, 2.5 steals, two blocks, 51.9% shooting and 29 minutes. And the budding finesse he displayed could take him from promising prospect to bona fide All-Star. “I think you got to see what he’s done this week, and you’ve got to be really, really happy if you’re a Detroit Pistons fan,” assistant coach Maz Trakh said. “At 19 years old, some of the things he was doing here — running the floor, getting out on screens, getting rebounds — and the beginning of the week to the end of the week he got more confident in the post. You can see he was better in the post.” Drummond was arguably the Pistons’ best player last season, and he turns 20 on Aug. 10. In limited minutes, he got by on sheer athleticism, although when he returned after missing significant time with a back injury, he did show a little more offense. A goal during the summer league was to make Drummond the hub of a lot of sets. They wanted to force the ball to him in the post to get used to playing with his back to basket. They want him to work on moves and get accustomed to smaller defenders coming down for help.