Cosell: Kap's ability to 'run fast in a straight line' doesn't matter

Colin Kaepernick submitted the worst game of his career against the Cardinals.

He took full responsibility.

"Today was 100-percent my fault," the 49ers' quarterback said after the game. "There’s nothing anyone in that locker room could’ve done to change that game today the way I played...

“(It’s) very hard for me to deal with. Very hard to see myself go out and play like that and hurt this team the way I did. I nullified all the efforts of every other player on that field today. That’s something I have to fix. I have to be better for this team moving forward.”

Even when Kaepernick has had good games over the past three plus years, not everybody has been sold on his ability to be an above…