As I mentioned earlier, one of the biggest surprises four weeks into the season is that the 49ers are having issues in their secondary. At the tail end of last year, it seemed like two rookies had locked up starting jobs for 2018 — CB Ahkello Witherspoon and FS Adrian Colbert.
Colbert, a seventh-round pick in 2017, flashed in the last few games last year and suddenly became a fan favorite. The 6-foot-2 safety finished the season with 37 tackles, a couple of forced fumbles and five passes defensed in 14 appearances.