LAS VEGAS — Shortly after he learned that the Warriors had paid Chicago $3.5 million for his draft rights, Jordan Bell texted his former Oregon teammate, Elgin Cook: On Golden State's Summer League team in Las Vegas, he has been alongside three of his ex-Ducks running mates: [...] at the dawn of his professional career, Bell has shown flashes of the defensive versatility and relentless motor that compelled the 2017 NBA champions to purchase his rights. Though his offensive repertoire remains raw, he has been a quick study in picking up the Warriors' concepts, terminology and, above all else, speed. "He's played hard," Chris DeMarco, Golden State's Summer League head coach, said after his team's 91-74 loss Monday night to Cleveland. Last season's Pac-12 Defensive Player of the Year, he has drawn comparisons to Draymond Green for his ability to switch off screens and guard all five positions. "Even at Oregon, I was never a go-to guy," said Bell, who averaged only 7.8 points per game over his three seasons with the Ducks. In the drubbing by Cleveland, he excelled as a fulcrum of Golden State's offense and paired his eight rebounds with three assists. After Saturday's loss, they...