Three positions to watch when Bears host Browns in preseason opener Saturday

Three positions to watch when the Bears host the Browns at noon Saturday at Soldier Field: Left tackle With Braxton Jones out with a knee injury, the Bears will start Kiran Amegadjie and have him alternate quarters with Jedrick Wills. If he is healthy, Jones is the favorite to win the job. Saturday is a big opportunity for Wills, a former Browns first-round pick, and Amegadjie to improve their standing. ‘‘There are too many things that are just not being done well enough,’’ offensive line coach…