OK, no player other than the quarterback can make that much difference, but it’s clear that defensive ends DeVante Wilson and Kyle Kragen might give the Bears what they lacked most last season — a pass rush. Definitely one of the biggest improvements we need to make is in pass defense,” Kragen said, “and that’s a combination of pass rush and coverage. Without hesitation, defensive coordinator Art Kaufman said Kragen is the team’s best pass-rusher, and defensive line coach Fred Tate says, “Kyle plays at 100 miles an hour all the time.” Kragen’s father, Greg, had 28.5 sacks in his 13 NFL seasons as an undersized nose tackle, but Kyle did not look like a pass-rushing demon at San Ramon Valley High School. Besides a renewed football career, Wilson also now has a family, which includes his girlfriend, Brittany Tull, and his 8-month-old daughter, Avery. Former Cal safety Bernard Hicks filed a lawsuit against the university for alleged medical malpractice regarding the treatment of concussions, the Daily Californian reported this week. In the suit filed this month, Hicks, who played for the Bears from 2004 to 2008 and says he suffered multiple concussions, claims the university did not take proper measures to prevent head injuries.