Throughout his college career, California quarterback Chase Garbers hasn’t posted big numbers, but the senior has experience and has done enough to impress Colorado head coach Karl Dorrell. CU (2-4, 1-2 Pac-12) will visit Cal (1-5, 0-3) on Saturday at Memorial Stadium in Berkeley, Calif. (1:40 p.m., TV: Pac-12 Networks) and facing Garbers might be at the top of the list of Dorrell’s challenges. “The best thing is that when you have a veteran defense going against a veteran quarterback then that kind of neutralizes some of that, but he’s a really good player,” Dorrell said.